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United States

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United States of America
Flag of the United States National Emblem of the United States
Flag National Emblem
Motto:
E pluribus unum (1789 to present)
(Latin: "Out of Many, One")
In God We Trust (1956 to present)
Anthem: "The Star-Spangled Banner"
Location of the United States
Capital Washington, D.C.
38°53′ N 77°02′ W
Largest city New York, New York
Official language(s) None at federal level;
English de facto
Government Federal republic
Representative democracy
George W. Bush (R)
Dick Cheney (R)
Independence
 • Declared
 • Recognized
From Great Britain
July 4, 1776
September 3, 1783
Area
 • Total
 
 • Water (%)
 
9,631,418 km² (3rd)
3,718,711 mi² 

4.87
Population
 • March, 2006 est.
 • 2000 census

 • Density
 
298,290,000 (3rd)
281,421,906

32/km² (140th)
83/mi² 
GDP (PPP)
 • Total
 • Per capita
2006 estimate
$13.049 trillion (1st)
$43,555 (3rd)
HDI (2003) 0.944 (10th) – high
Currency Dollar ($) (USD)
Time zone
 • Summer (DST)
(UTC-5 to -10)
(UTC-4 to -10)
Internet TLD .us .gov .edu .mil .um
Calling code +1
For other meanings, see the disambiguation pages for U.S., USA, or United States.

The United States of America is a federal republic situated primarily in North America. It is bordered on the north by Canada and to the south by Mexico. It comprises 50 states and one federal district, and has several territories with differing degrees of affiliation. It is also referred to, with varying formality, as the United States, America[1], the U.S., the U.S.A., the U.S. of A., the States, or (poetically) Columbia.

Since the twentieth century, following World War I, the United States has emerged as the dominant global influence in economic, political, military, cultural and technological affairs. Following the collapse of the Soviet Union, it is today's sole global superpower.

The country celebrates its founding date as July 4, 1776, when the Second Continental Congress—representing thirteen British colonies—adopted the Declaration of Independence that rejected British authority in favor of self-determination. The structure of the government was profoundly changed on March 4, 1789, when the states replaced the Articles of Confederation with the United States Constitution.

Contents

History

U.S. History
Timeline:
Colonial America
1776 to 1789
1789 to 1849
1849 to 1865
1865 to 1918
1918 to 1945
1945 to 1964
1964 to 1980
1980 to 1988
1988 to present
Topics:
Diplomatic history
Continental expansion
Overseas expansion
Military history
Industrial history
Economic history
Cultural history
History of the South
edit box
Main article: History of the United States

Prehistory

American history began with the migration of people from Asia across the Bering land bridge some time prior to 12,000 years ago, possibly following large animals that they hunted into the Americas. These Native Americans left evidence of their presence in petroglyphs, burial mounds, and other artifacts. It is estimated that 2–9 million people lived in the territory now occupied by the U.S. before that population was diminished by European contact and the foreign diseases it brought (although both the number of Native Americans originally on the continent and the number who did not survive European immigration are the subject of continued research and thus are open to debate). Some advanced societies were the Anasazi of the southwest, who inhabited Chaco Canyon (and built sandstone buildings with up to 5 floors), and the Woodland Indians, who built Cahokia, a city with a population of 40,000 at its peak in AD 1200, located near present-day St. Louis, Missouri.

European settlement

External visitors including the Norse had arrived before, but it was not until after the voyages of Christopher Columbus in early 1500s that European nations began to explore the land in earnest and settle there permanently.

During the 1500s and 1600s, the Spanish settled parts of the present-day Southwest and Florida. The first successful English settlement was at Jamestown, Virginia, in 1607. Within the next two decades, several Dutch settlements, including New Amsterdam (the predecessor to New York City), were established in what are now the states of New York and New Jersey. In 1637, Sweden established a colony at Fort Christina (in what is now Delaware), but lost the settlement to the Dutch in 1655.

This was followed by extensive British settlement of the east coast. The British colonists remained relatively undisturbed by their home country until after the French and Indian War when the Kingdom of Great Britain and its North American Colonies fought against France and its North American Colonies. The war resulted in France ceding Canada and the Great Lakes region to Britain, and Spain gaining Louisiana in compensation for its loss of Florida to Britain.

Later that year, the British government under George III issued the Royal Proclamation of 1763 that placed a boundary upon the westward expansion of the British North American colonies. The Proclamation's goal was to force colonists to negotiate with the Native Americans for the lawful purchase of the land and, therefore, to reduce the costly frontier warfare that had erupted over land conflicts.

A tax was imposed on the colonists as it was becoming increasingly difficult for the crown to pay for its military excursions and the defense of the American colonies from native uprisings. The colonists widely resented the taxes as they were denied representation in the British Parliament. Tensions between Britain and the colonists increased, and the thirteen colonies eventually rebelled against British rule.

Nationhood

In 1775, the American Revolutionary War against colonial rule by Britain began. In 1776, the 13 colonies declared their independence from Great Britain and formed the United States. Before the ratification of a national government, the United States existed as an informal alliance of independent individual colonies with their own laws and sovereignty, while the Second Continental Congress was given the nominal authority by the colonies to make decisions regarding the formation and founding of the Continental Army but not to levy taxes or make federal law.

The first united national political structure was a confederation proposed in 1777, and ratified in 1781 as the Articles of Confederation, making the United States the world's first constitutional federal republic. After long debate, this was supplanted in 1789 by the Constitution, which formed a more centralized federal government. For the original 13 states, the date when they accepted the Constitution is often considered as their date of admission to the union.

Civil War

American westward expansion is idealized in Emanuel Leutze's famous painting Westward the Course of Empire Takes its Way (1861). The title of the painting, from a 1726 poem by Bishop Berkeley, was a phrase often quoted in the era of Manifest Destiny, expressing a widely held belief that civilization had steadily moved westward throughout history. (more)
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American westward expansion is idealized in Emanuel Leutze's famous painting Westward the Course of Empire Takes its Way (1861). The title of the painting, from a 1726 poem by Bishop Berkeley, was a phrase often quoted in the era of Manifest Destiny, expressing a widely held belief that civilization had steadily moved westward throughout history. (more)
Main article: American Civil War

By the mid-19th century, a major division over the issue of states' rights, role of the federal government, and the expansion of slavery came to a head.

The Northern states had become opposed to slavery, while the Southern states saw it as necessary for the continued success of agriculture, especially the cotton industry, and wanted it expanded to newer territories in the West. Several federal laws were passed in an attempt to settle the dispute, including the Missouri Compromise and the Compromise of 1850.

The 1860 election of Abraham Lincoln should be considered a harbinger due to the fact that he was not even on the ballot in nine of the Southern states. His platform of increased import taxes to enhance the industrialization of the Northeast was considered a direct tax on Southerners who were more apt to import cheaper priced goods from Britain. Also, Lincoln promised to increase federal spending in the Ohio Valley in the form of new roads with his Homestead policy. For these reasons, many Southern citizens did not consider Lincoln a representative of their interests.

The dispute reached a crisis on December 20, 1860, when South Carolina became the first state to secede from the Union. Six other southern states followed (Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas)1, forming the Confederate States of America and leading to the Civil War. Soon after the war began, four more southern states seceded (Virginia, Arkansas, Tennessee, and North Carolina), and two states (Kentucky and Missouri) had both Union and Confederate governments at different points throughout the war. Though these states were never under consistent Confederate control, they were still counted as Confederate States (seen most prominently on the flag of Robert E. Lee's Army of Northern Virginia).

During the war (after the Battle of Antietam), President Abraham Lincoln issued the Emancipation Proclamation, mandating the freedom of slaves located in the states in rebellion. There were some exceptions. Slaves owned by Northerners in the State of Louisiana were considered exempt. Full emancipation did not take place until after the end of the war in 1865, when the Thirteenth Amendment took effect. The Civil War effectively ended the question of a state's right to secede, and is widely accepted as a major turning point after which the federal government became more powerful than state governments.

Expansion

National Atlas map (circa 2005) depicting territorial acquisitions and dates of statehood.
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National Atlas map (circa 2005) depicting territorial acquisitions and dates of statehood.

During the 19th century, many new states were added to the union as the nation expanded across the continent. Manifest Destiny was a philosophy that encouraged westward expansion in the United States: as the population of the Eastern states grew and as a steady increase of immigrants entered the country, settlers moved steadily westward across North America.

In the process, the U.S. displaced most Native American nations. This displacement of Native Americans continues to be a matter of contention in the U.S., with many nations attempting to assert their original claims to various lands, citing the Indian relocation acts of 1830. In some areas, Native American populations had been reduced by foreign diseases contracted through contact with European settlers, and U.S. settlers acquired those emptied lands.

Further information: United States territorial acquisitions, and U.S. colonization outside North America, and [[]], and [[]], and [[]], and [[]], and [[]], and [[]], and [[]]

During this period, the nation also became an industrial power and a center for innovation and technological development.

Geography and climate

Geography

A satellite composite image of the contiguous United States. Deciduous vegetation and grasslands prevail in the east, transitioning to prairies, boreal forests, and the Rockies in the west, and deserts in the southwest. In the northeast, the coasts of the Great Lakes and Atlantic seaboard host much of the country's population.
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A satellite composite image of the contiguous United States. Deciduous vegetation and grasslands prevail in the east, transitioning to prairies, boreal forests, and the Rockies in the west, and deserts in the southwest. In the northeast, the coasts of the Great Lakes and Atlantic seaboard host much of the country's population.
Mount McKinley, Alaska, the highest point in North America at 20,320 ft (6,194 m)
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Mount McKinley, Alaska, the highest point in North America at 20,320 ft (6,194 m)
The Grand Canyon from Moran Point. The Grand Canyon is among the most famous locations in the country.
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The Grand Canyon from Moran Point. The Grand Canyon is among the most famous locations in the country.
Main article: Geography of the United States

The United States shares land borders with Canada (to the north) and Mexico (to the south), and territorial water boundaries with Canada, Russia, the Bahamas, and numerous smaller nations. It is otherwise bounded by the Pacific Ocean on the west, the Atlantic Ocean on the east, and the Gulf of Mexico to the southeast. Alaska borders the Pacific Ocean to the south, the Bering Strait to the west, and the Arctic Ocean to the north, while Hawaii lies far to the southwest of the mainland in the Pacific Ocean.

Forty-eight of the states are in the single region between Canada and Mexico; this group is referred to, with varying precision and formality, as the continental or contiguous United States, sometimes abbreviated CONUS, and as the Lower 48. Alaska, which is not included in the term contiguous United States, is at the northwestern end of North America, separated from the Lower 48 by Canada. The state of Hawaii is an archipelago in the Pacific Ocean. The capital city, Washington, District of Columbia, is a federal district located on land donated by the state of Maryland. (Virginia had also donated land, but it was returned in 1847.) The United States also has overseas territories with varying levels of independence and organization.

In total area (which includes inland water and land), only Russia and Canada are larger than the United States; if inland water is excluded, China ranks second, the U.S. ranks third, and Canada ranks fourth. The United States's total area is 3,718,711 square miles (9,631,418 km²), of which land makes up 3,537,438 square miles (9,161,923 km²) and water makes up 181,273 square miles (469,495 km²).

The United States's landscape is one of the most varied among those of the world's nations. The East consists largely of rolling hills and temperate forests. The Appalachian Mountains form a line of low mountains in the Eastern U.S. The five Great Lakes are located in the north-central portion of the country, four of them forming part of the border with Canada. The Southeast largely contains subtropical forests and mangrove, especially in Florida. West of the Appalachians, the Ohio and Tennessee Valleys and the Midwest consist largely of rolling hills and productive farmland, stretching south to the Gulf Coast.

Stretching west from the Midwest are the Great Plains. A large portion of the country's agricultural products are grown in this region. The region consists mostly of large, heavily cultivated and very flat grassland. The Great Plains come to an abrupt end at the Rocky Mountains. The Rocky Mountains form a large portion of the Western U.S., entering from Canada and stretching nearly to Mexico. The Rocky Mountains generally contain fairly mild slopes and low peaks compared to many of the other great mountain ranges, with a few exceptions (such as the Teton Mountains in Wyoming and the Sawatch Range in Colorado). In addition, instead of being one generally continuous and solid mountain range, it is broken up into a number of smaller, intermittent mountain ranges, forming a large series of basins and valleys.

West of the Rocky Mountains lies the Intermontane Plateaus (also known as the Intermountain West), a large, arid desert lying between the Rockies and the Cascades and Sierra Nevada ranges. The large southern portion, known as the Great Basin, consists of salt flats, drainage basins, and many small north-south mountain ranges. The Southwest is predominantly a low-lying desert region. A portion known as the Colorado Plateau, centered around the Four Corners region, is considered to have some of the most spectacular scenery in the world. It is accentuated in such national parks as Grand Canyon, Arches, and Bryce Canyon, among others.

The Intermontane Plateaus come to an end at the Cascade Range and the Sierra Nevada. The Cascades consist of largely intermittent, volcanic mountains rising prominently from the surrounding landscape. The Sierra Nevada, further south, is a high, rugged, and dense mountain range. It contains the highest point in the contiguous 48 states, Mount Whitney (14,505 ft; 4,421 m). These areas contain some spectacular scenery as well, as evidenced by such national parks as Yosemite and Mount Rainier. West of the Cascades and Sierra Nevada is a series of valleys, such as the Central Valley in California and the Willamette Valley in Oregon. Along the coast is a series of low mountain ranges known as the Pacific Coast Ranges. Much of the Pacific Northwest coast is inhabited by some of the densest vegetation outside of the Tropics, and also the tallest trees in the world (the Redwoods).

Alaska contains some of the most dramatic and untapped scenery in the country. Tall, prominent mountain ranges rise up sharply from broad, flat tundra plains. On the islands off the south and southwest coast are many volcanoes. Hawaii, far to the south of Alaska in the Pacific Ocean, is a chain of tropical, volcanic islands, popular as a tourist destination for many from East Asia and the mainland United States.

Climate

The U.S. State of Hawai'i has a year-round tropical climate, and is known for its many beaches, such as this one on O'ahu.
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The U.S. State of Hawai'i has a year-round tropical climate, and is known for its many beaches, such as this one on O'ahu.

Due to its large size and wide range of geographic features, the United States contains just about every climate. Its comparatively generous climate partially contributed to the country's rise as a world power, with infrequent severe drought in the major agricultural regions, a general lack of widespread flooding, and a mainly temperate climate that receives adequate precipitation.

The main influence on U.S. weather is the polar jet stream, which brings in large low pressure systems from the northern Pacific Ocean. The Cascade Range, Sierra Nevada, and Rocky Mountains pick up most of the moisture from these systems as they move eastward. Greatly diminished by the time they reach the High Plains, much of the moisture has been sapped from the orographic effect as it is forced over several mountain ranges. However, once it moves over the Great Plains, uninterrupted flat land allows it to reorganize and can lead to major clashes of air masses. In addition, moisture from the Gulf of Mexico is often drawn northward. When combined with a powerful jet stream, this can lead to violent thunderstorms, especially during spring and summer. Sometimes during late winter and spring these storms can combine with another low pressure system as they move up the East Coast and into the Atlantic Ocean, where they intensify rapidly. These storms are known as Nor'easters and often bring widespread, heavy snowfall to the Mid-Atlantic and New England. The uninterrupted flat grasslands of the Great Plains also leads to some of the most extreme climate swings in the world. Temperatures can rise or drop rapidly and winds can be extreme, and the flow of heat waves or arctic air masses often advance uninterrupted through the plains.

The Great Basin and Columbia Plateau (the Intermontane Plateaus) are arid or semiarid regions that lie in the rain shadow of the Cascades and Sierra Nevada. Precipitation averages less than 15 inches (38 cm). The Southwest is a hot desert, with temperatures exceeding 100°F (38°C) for several weeks at a time in summer. The Southwest and the Great Basin are also affected by the monsoon from the Gulf of California from July-September, which brings localized but often severe thunderstorms to the region. Much of California consists of a Mediterranean climate, with sometimes excessive rainfall from October-April and nearly no rain the rest of the year. In the Pacific Northwest rain falls year-round, but is much heavier during winter and spring. The mountains of the west receive abundant precipitation and very heavy snowfall. The Cascades are one of the snowiest places in the world, with some places averaging over 600 inches (1,520 cm) of snow annually, but the lower elevations closer to the coast receive very little snow. Another significant (but localized) weather effect is lake-effect snow that falls south and east of the Great Lakes, especially in the hilly portions of the Upper Peninsula of Michigan and on the Tug Hill Plateau in New York. The Wasatch Front and Wasatch Range in Utah can also receive significant lake effect accumulations off of the Great Salt Lake.

Natural disasters

Hurricanes are among the most devastating natural disasters that impact the United States. This picture shows the Coast Guard assisting in relief during Hurricane Katrina in 2005.
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Hurricanes are among the most devastating natural disasters that impact the United States. This picture shows the Coast Guard assisting in relief during Hurricane Katrina in 2005.

The United States is affected by a large variety of natural disasters yearly. Although severe drought is rare, it has occasionally caused major problems, such as during the Dust Bowl from 1931-1942, which coincided with the Great Depression. Farmland failed throughout the Plains, entire regions were virtually depopulated, and dust storms ravaged the land. More recently, the western U.S. experienced widespread drought from 1999-2004, and signs of a major, long-term drought across the Great Plains have developed.[2]

The United States also experiences, by a large margin, the most frequent and powerful tornadoes in the world. The Great Plains, due to the contrasting air masses, sees frequent severe thunderstorms and tornado outbreaks during spring and summer. The strip of land from north Texas north to Kansas and east into Tennessee is known as Tornado Alley, where many houses have tornado shelters and many towns have tornado sirens. Another natural disaster that frequents the country are hurricanes, which can hit anywhere along the Gulf Coast or the Atlantic Coast, particularly the central and southern Texas coasts, the area from southeastern Louisiana east to the Florida Panhandle, the east coast of Florida, and the Outer Banks of North Carolina, although any portion of the coast is at risk. Hurricane season runs from June 1 to November 30, with a peak from mid-August through early October. Some of the more devastating hurricanes have included the Galveston Hurricane of 1900, Hurricane Andrew in 1992, and Hurricane Katrina in 2005. The remnants of tropical cyclones from the Eastern Pacific also occasionally impact the southwestern United States, bringing sometimes heavy rainfall.

Like drought, widespread severe flooding is rare. Some exceptions include the Great Mississippi Flood of 1927, the Great Flood of 1993, and widespread flooding and mudslides caused by the 1982-1983 El Niño event in the western United States. Localized flooding can, however, occur anywhere, and mudslides from heavy rain can cause problems in any mountainous area, particularly the Southwest. Large stretches of desert shrub in the west can fuel the spread of wildfires. The narrow canyons of many mountain areas in the west and severe thunderstorm activity during the monsoon season in summer leads to sometimes devastating flash floods as well, while Nor'easter snowstorms can bring activity to a halt throughout the Northeast (although heavy snowstorms can occur almost anywhere).

The West Coast of the continental United States makes up part of the Pacific Ring of Fire, an area of heavy tectonic and volcanic activity that is the source of 90% of the world's earthquakes. The American Northwest sees the highest concentration of active volcanoes in the United States, in Washington, Oregon and northern California along the Cascade Mountains. Other hotspots for volcanic activity include the islands south and southwest of Alaska and on the Alaska Peninsula. There are many volcanoes located in the islands of Hawaii, but several are dormant and the rest show only sporadic activity. The last recorded eruption in Hawaii occurred in the 18th century. Volcanic eruptions can occasionally be devastating, such as in the 1980 eruption of Mount St. Helens in Washington.

The Ring of Fire makes California and southern Alaska particularly vulnerable to earthquakes. Earthquakes can cause devastating damage, such as the 1906 San Francisco Earthquake or the 1964 Good Friday Earthquake near Anchorage, Alaska. California is well known for seismic activity, and requires large structures to be earthquake proofed to minimize loss of life and property. Outside of devastating earthquakes, California experiences minor earthquakes on a regular basis.

Government

The Constitution is the supreme law of the United States.
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The Constitution is the supreme law of the United States.
Main article: Federal government of the United States

Republic and suffrage

The United States is a constitutional republic, with a government composed of and operating through a set of limited powers imposed by its design and enumerated in the United States Constitution. Specifically, the nation operates as a presidential democracy. There are three levels of government: federal, state, and local. Each level enjoys certain exclusive powers and obligations, and the precise division of these powers has been a matter of considerable ongoing debate. Officials of each of these levels are either elected by eligible voters via secret ballot or appointed by other elected officials. Almost all electoral offices are decided in "first-past-the-post" elections, where a specific candidate who earns at least a plurality of the vote is elected to office, rather than a party being elected to a seat to which it may then appoint an official. Suffrage has changed significantly over time. In the early years of the United States, voting was considered a matter for state governments, and was commonly restricted to white men who owned land. Direct elections were held only for the Federal House of Representatives (the "lower house" of a bicameral parliament, or Congress) and state legislatures, although this varied from state to state. Under this original system, the Senate (the "upper house" of Congress) was chosen by a majority vote of their state's legislature. Now, since the 1913 ratification of the Seventeenth Amendment, members of both Houses of Congress are directly elected. Today, partially due to the Twenty-sixth Amendment, Americans enjoy almost universal suffrage from the age of 18 regardless of race, sex, or wealth, and both Houses of Congress are directly elected. There are some limits, however: felons are disenfranchised and in some states former felons are as well. Furthermore, the national representation of territories and the federal district of Washington, DC, in Congress is limited: residents of the District of Columbia are subject to federal laws and federal taxes but their only Congressional representative is a non-voting delegate.

Federal government

The federal government is comprised of a Legislative Branch (led by Congress), an Executive Branch (led by the President), and a Judicial Branch (led by the Supreme Court). These three branches were designed to apply checks and balances on each other. The Constitution limits the powers of the federal government to defense, foreign affairs, the issuing and management of currency, the management of trade and relations between the states, as well as the protection of human rights. All other government powers theoretically repose in the individual states. However, in addition to these explicitly stated powers, the federal government—with the assistance of the Supreme Court—has gradually extended their power into such areas as welfare and education, on the basis of the "Necessary and Proper" and "Commerce" clauses of the Constitution.

Legislative branch

The Congress of the United States is the legislative branch of the federal government of the United States. It is bicameral, being comprised of the House of Representatives and the Senate. The House of Representatives consists of 435 members, each of whom represents a congressional district and serves for a two-year term. House seats are apportioned among the states by population; in contrast, each state has two Senators, regardless of population. There are a total of 100 senators (as there are currently 50 states), who serve six-year terms (one third of the Senate stands for election every two years). Each House has particular exclusive powers—the Senate must give "advice and consent" to many important Presidential appointments, and the House must introduce any bills for the purpose of raising revenue. However, the consent of both Houses is required to make any law. The powers of Congress are limited to those enumerated in the Constitution; all other powers are reserved to the states and the people. The Constitution also includes the "necessary-and-proper clause", which grants Congress the power to "make all laws which shall be necessary and proper for carrying into execution the foregoing powers."

Executive branch

All executive power in the federal government is vested in the President of the United States, although power is often delegated to his/her Cabinet members and other officials. The President and Vice President are elected as 'running mates' for four-year terms by the Electoral College, for which each state, as well as the District of Columbia, is allocated a number of seats based on its representation (or ostensible representation, in the case of D.C.) in both houses of Congress.

Further information: U.S. Electoral College, and [[]], and [[]], and [[]], and [[]], and [[]], and [[]], and [[]], and [[]]

The relationship between the President and the Congress reflects that between the English monarchy and parliament at the time of the framing of the United States Constitution. Congress can legislate to constrain the President's executive power, even with respect to his or her command of the armed forces; however, this power is used only very rarely—a notable example was the constraint placed on President Richard Nixon's strategy of bombing Cambodia during the Vietnam War. While the President can directly propose legislation (for instance, the Federal Budget), he must rely on supporters in Congress to promote and support his or her legislative agenda. After identical copies of a particular bill have been approved by a majority of both Houses of Congress, the President's signature is required to make these bills law; in this respect, the President has the power—only occasionally used—to veto congressional legislation. Congress can override a presidential veto with a two-thirds majority vote from both houses. The ultimate power of Congress over the President is that of impeachment or removal of the elected President through a House vote, a Senate trial, and a Senate vote (by two-thirds majority in favor). The threat of using this power has had major political ramifications in the cases of Presidents Andrew Johnson, Richard Nixon, and Bill Clinton.

The President makes around 2,000 executive appointments, including members of the Cabinet and ambassadors, which must be approved by the Senate; the President can also issue executive orders and pardons, and has other Constitutional duties, among them the requirement to give a State of the Union address to Congress from time to time (usually once a year). (The Constitution does not specify that the State of the Union address be delivered in person; it can be in the form of a letter, as was the practice during most of the 19th century.) Although the President's constitutional role may appear to be constrained, in practice, the office carries enormous prestige that typically eclipses the power of Congress: the Presidency has justifiably been referred to as 'the most powerful office in the world'. The Vice President is first in the line of succession, and is the President of the Senate ex officio, with the ability to cast a tie-breaking vote. The members of the President's Cabinet are responsible for administering the various departments of state, including the Department of Defense, the Justice Department, and the State Department. These departments and department heads have considerable regulatory and political power, and it is they who are responsible for executing federal laws and regulations. George W. Bush is the 43rd President, currently serving his second term.

Judicial branch

The highest court is the Supreme Court, which currently consists of nine justices. The court deals with matters pertaining to the Federal Government, disputes between states, and interpretation of the United States Constitution, and can declare legislation or executive action made at any level of the government as unconstitutional, nullifying the law and creating precedent for future law and decisions. Below the Supreme Court are the courts of appeals, and below them in turn are the district courts, which are the general trial courts for federal law. Separate from, but not entirely independent of, this federal court system are the individual court systems of each state, each dealing with its own laws and having its own judicial rules and procedures. A case may be appealed from a state court to a federal court only if there is a federal question (an issue arising under the U.S. Constitution, or laws/treaties of the United States); the supreme court of each state is the final authority on the interpretation of that state's laws and constitution.

State, tribal, and local governments

United States of America, showing states, divided into counties. Note that Alaska and Hawaii are shown at different scales, and that the Aleutian Islands and the uninhabited Northwestern Hawaiian Islands are omitted from this map.
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United States of America, showing states, divided into counties. Note that Alaska and Hawaii are shown at different scales, and that the Aleutian Islands and the uninhabited Northwestern Hawaiian Islands are omitted from this map.

The state governments have the greatest influence over most Americans' daily lives. Each state has its own written constitution, government, and code of laws. There are sometimes great differences in law and procedure between individual states, concerning issues such as property, crime, health, and education. The highest elected official of each state is the Governor. Each state also has an elected legislature (bicameral in every state except Nebraska), whose members represent the voters of the state. Each state maintains its own judiciary, with the lowest level typically being county courts, the highest being the state supreme court, though sometimes named differently. In some states, supreme and lower court justices are elected by the people; in others, they are appointed, as they are in the federal system. See state court for more information.

As a result of the Supreme Court case Worcester v. Georgia, Indian tribes are considered "domestic dependent nations" that operate as sovereign governments subject to Federal authority but, generally, outside of the influence from state governments. Hundreds of laws, executive orders, and court cases have modified the governmental status of tribes vis-à-vis states, but have kept the two officially distinct. Tribal capacity to operate robust governments varies, from a simple council used to manage all aspects of tribal affairs, to large and complex bureaucracies with several branches of government. Tribes are empowered to form their own governments, with power resting in elected tribal councils, elected tribal chairpersons, or religiously appointed leaders (as is the case with pueblos). Tribal citizenship (and voting rights) is generally restricted to individuals of Native descent, but tribes are free to set whatever membership requirements they wish.

The institutions that are responsible for local government are typically town, city, or county boards, making laws that affect their particular area. These laws concern issues such as traffic, the sale of alcohol, and keeping animals. The highest elected official of a town or city is usually the mayor. In New England, towns operate in a direct democratic fashion, and in some states, such as Rhode Island and Connecticut, counties have little or no power, existing only as geographic distinctions. In other areas, county governments have more power, such as to collect taxes and maintain law enforcement agencies.

Political divisions

Map of the United States with state names
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Map of the United States with state names
Main article: Political divisions of the United States

With the Declaration of Independence, the thirteen colonies proclaimed themselves to be polities modeled after the European states of the time. Although considered as sovereigns initially, under the Articles of Confederation of 1781 they entered into a "Perpetual Union" and created a fully sovereign federal state, delegating certain powers to the national Congress, including the right to engage in diplomatic relations and to levy war, while each retaining their individual sovereignty, freedom and independence. But the national government proved too ineffective, so the administrative structure of the government was vastly reorganized with the United States Constitution of 1789. Under this new union, the continued status of the individual states as sovereign nation states fell into dispute in 1861, as several states attempted to secede from the union; in response, then-President Abraham Lincoln claimed that such secession was illegal, and the result was the American Civil War. Since the Union victory in 1865, the independent status of the individual states has not been broached again by any state, and the status of each state within the union has been deemed by mainstream officials and academics to be settled as being subordinate to the union as a whole.

In subsequent years, the number of states grew steadily due to western expansion, the purchase of lands by the national government from other nation states, and the subdivision of existing states, resulting in the current total of 50. The states are generally divided into smaller administrative regions, including counties, cities and townships.

The United States–Canadian border is the longest undefended political boundary in the world. The 50 states are divided into distinct sections:

The United States also holds several other territories, districts, and possessions, notably the federal district of the District of Columbia, which is the nation's capital, and several overseas insular areas, the most significant of which are American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the United States Virgin Islands. The Palmyra Atoll is the United States's only incorporated territory; it is unorganized and uninhabited. Islands gained by the United States in the war against Spain at the turn of the 20th century were no longer to be considered foreign territory; on the other hand, the United States Supreme Court declared that they were not automatically covered by the Constitution and that it was up to Congress to decide what portions of the Constitution, if any, applied to them. This had been the precisely the quarrel between American colonies and Great Britain that resulted in the founding of the United States. Seen like this, the Supreme Court in 1901 would have decided in favor of George III of the United Kingdom.

The United States Navy has held a base at a portion of Guantanamo Bay, Cuba, since 1898. The United States government possesses a lease to this land, which only mutual agreement or United States abandonment of the area can terminate. The present Cuban government of Fidel Castro disputes this arrangement, claiming Cuba was not truly sovereign at the time of the signing. The United States argues this point moot because Cuba apparently ratified the lease post-revolution, and with full sovereignty, when it cashed one rent check in accordance with the disputed treaty.

Foreign relations and military

The Statue of Liberty was a centennial gift to the United States from France. (See Franco-American relations.)
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The Statue of Liberty was a centennial gift to the United States from France. (See Franco-American relations.)
Main article: Foreign relations of the United States

The immense military and economic strength of the United States has made its foreign relations an especially important topic in international politics. Reactions towards American foreign policy by other nationalities are often strong, ranging from admiration to fierce criticism. The same range of opinions is also found within the United States, with many Americans either supporting or strongly criticizing United States foreign policy.

Traditionally, the greatest military ally of the United States has been the United Kingdom, though the earliest alliance the nation formed was with France (see Franco-American relations).

The United States presently occupies 702 military bases worldwide in 132 different countries. The United States is currently involved in an occupation in Iraq, Afghanistan, and an intervention in Haiti. It has also embarked upon a global War on Terrorism.

The United States currently enjoys a particularly positive relationship with the United Kingdom, Australia, Japan, and Poland, among several others, in that these nations are participating as active military allies with, or logistical supporters of, the United States in all theaters. Currently, Canada, Germany, and other nations, are participating in the Afghanistan theater under the command of NATO, but not in Iraq.

Three of the nation's four military branches are administered by the Department of Defense: the Army, the Navy (including the Marine Corps), and the Air Force. The Coast Guard falls under the jurisdiction of the Department of Homeland Security in peacetime, but is placed under the Department of Defense in times of war.

The combined United States armed forces comprise 1.4 million active duty personnel, along with several hundred thousand each in the Reserves and the National Guard. Military conscription ended in 1973. The United States armed forces are considered to be the most powerful (of any sort) in the world and their force projection capabilities are unrivaled by any nation or collaboration of nations. They are dominant on land, water, air, and space.

The 2005 defense budget amounted to $401.7 billion, an increase of 4% over 2004 and 35% since 2001, with over 50% being spent in research & development. The 2006 defense budget will amount to nearly $440 billion, the highest ever. U.S. defense expenditure is estimated to be greater than the next twelve largest national military budgets combined, although citing this figure can be controversial since it does not take into effect local-currency purchasing power ratios.

It should be noted that the United States' focus on military expenditures has ranged very broadly, due to regularly changing ideologies inherent in its political system. The American military, in terms of physical resources, is actually smaller now than it was twenty years ago, despite being larger than it was five years ago, for example.

Human rights

Main article: Human rights in the United States

Several American states maintained legal slavery until 1865 and did not abolish various forms of ethnic and other discrimination until the mid-to-late 20th century. The effects of this history are still apparent in the social structure, although all Americans now possess legal equality.

The United States is sometimes criticized for interventionist policies in Latin America, Middle-East, South-East Asia and elsewhere, and for aid (financial, military and otherwise) given to repressive governments and warlords. Its military tactics have sometimes been questioned, as in the Vietnam war in which U.S. explosives and chemical weapons left much of the region uninhabitable to the locals.

During the Cold War period, aid policies were considered a counterweight to the aid the Soviet Union was giving, but American foreign support has been criticized as profit-driven, such as support to Saddam Hussein, Suharto and Saudi Arabia. Traditionally, however, the U.S. has still been strongly committed to the Western ideology to pursue civil liberties.

In the early 21st century, most notably following the September 11, 2001 attacks and the ensuing War on Terror, invasions of privacy, intrusive inspections, detentions under the USA PATRIOT Act, secret prisons and restrictions on freedom of expression are currently debated questions. While opponents see them as dangerous decline in human rights and democracy, supporters see them as positive and necessary actions for security.

Economy

The Midtown area of Manhattan, New York City, is one of the most important commercial and financial areas in the world.
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The Midtown area of Manhattan, New York City, is one of the most important commercial and financial areas in the world.
Farming is a major contributer to the American economy. This style of farm near Klingerstown, Pennsylvania is similar in style to many older farms on the East Coast.
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Farming is a major contributer to the American economy. This style of farm near Klingerstown, Pennsylvania is similar in style to many older farms on the East Coast.
The state of Alaska is a major domestic source of oil, which is transported from the far north of the state to ports via the Trans-Alaska Pipeline.
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The state of Alaska is a major domestic source of oil, which is transported from the far north of the state to ports via the Trans-Alaska Pipeline.
Main article: Economy of the United States

The United States has the largest and most diverse economy of any nation-state in the world. The United States has a per-capita annual gross domestic product of $43,555 (www.imf.org), ranking 3rd behind Luxembourg, and Equatorial Guinea. As in all market-oriented economies, private individuals and business firms in the U.S. make most of the decisions, and the federal and state governments buy needed goods and services predominantly in the private marketplace. This is financed via taxes and borrowings in the money and capital markets. Federal borrowings are subject to borrowing caps to theoretically prevent fiscal irresponsibility. The cap as of 2004 stands at 8.2 trillion. (Borrowings as of November 2005 are 8.1 trillion.)

The largest sector of the U.S. economy is now service, which employs roughly three quarters of the work force. The United States has many natural resources, including coal, oil and gas, metals, and such minerals as gold, soda ash, and zinc. In agriculture, it is a top producer of, among other crops, corn, soy beans, rice and wheat; the United States is a net exporter of food. The manufacturing sector produces goods such as cars, airplanes, steel, and electronics, among many others.

Economic activity varies greatly from one part of the country to another, with many industries being concentrated in certain cities or regions. For example, New York City is the center of the American financial, publishing, broadcasting, and advertising industries. Silicon Valley is the country's largest high technology hub, while Los Angeles is the most important center for film and television production. The Midwest is known for its reliance on manufacturing and heavy industry with Chicago as the "Capital of the Midwest," and with Detroit, Michigan, serving as the center of the American automotive industry. The Great Plains are known as the "breadbasket" of America for their tremendous agricultural output; the intermountain region serves as a mining hub and natural gas resource; the Pacific Northwest for fish and timber, while Texas is largely associated with the oil industry; and the Southeast is a major hub for both medical research and the textiles industry.

Several countries continue to link their currency to the dollar or even use it as a currency (such as Ecuador), although this practice has subsided since the collapse of the Bretton Woods system. Many markets are also quoted in dollars, such as those of oil and gold. The dollar is also the predominant reserve currency in the world, and more than half of global reserves are in dollars.

The largest trading partner of the United States is Canada (19%), followed by China (12%), Mexico (11%), and Japan (8%). About $1.1 billion dollars worth of goods cross the U.S.-Canada border each day, making the two the largest trading partners in the world.

In 2003, the United States was ranked as the third most visited tourist destination in the world; its 40,400,000 visitors ranked behind France's 75,000,000 and Spain's 52,500,000. The largest amount of tourist receipts come from Canadians.

Labor unions have existed since the 19th century, and grew large and powerful from the 1930s to the 1950s. See Labor history of the United States. Since 1970 they have shrunk in the private sector and now cover fewer than 8% of the workers. However union membership has grown rapidly in the public sector, especially among teachers, nurses, police, postal workers, and municipal clerks. There have been few strikes in recent years.

The United States's imports exceed exports by 80%, leading to a real annual trade deficit of $650.3 billion or 5.7% of real gross domestic product. It is the largest debtor nation in the world, with total gross foreign liabilities of over $12 trillion as of 2004, and it absorbs more than 50% of global savings annually.

Since the 1980s, the U.S. has increased the use of neoliberal economic policies that reduce government intervention and reduce the size of the welfare state, backing away from the more interventionist Keynesian economic policies that had been in favor since the Great Depression. As a result, the United States provides fewer government-delivered social welfare services than most industrialized nations, choosing instead to keep its tax burden lower and relying more heavily on the free market and private charities.

Eighteen states and the District of Columbia have minimum wages higher than the national level ($5.15 per hour), including the highest, the State of Washington's $7.35. Twenty-six states are the same as the federal level; two—Ohio and Kansas—are below; and six do not have state laws.

The United Nations Development Programme Report 2005 ranks income the United States as the 74th most equal out of 124 countries, as measured by the Gini coefficient. The richest 10% make 15.9 times as much as the poorest 10%, and the richest 20% make 8.4 times as much as the poorest 20%. (See List of countries by income equality.) However, the median income in America is greater than in most industrialized nations, placing higher by the Gini coefficient.

America's poverty line, defined for a family of four as an income of less than $19,157, is at 12.7% of the general population. Approximately one out of every five children in the United States grows up below the official poverty line. Among racial groups; Native Americans and Alaska Natives have the lowest median income while Asians have the hi