United States Capitol in the context of "US Library of Congress"

The Library of Congress (LC or sometimes LOC) is a research library in Washington, D.C., serving as the library and research service for the United States Congress and the de facto national library of the United States. It also administers copyright law through the United States Copyright Office, and it houses the Congressional Research Service.

Founded in 1800, the Library of Congress is the oldest federal cultural institution in the United States. It is housed in three buildings on Capitol Hill, adjacent to the United States Capitol, along with the National Audio-Visual Conservation Center in Culpeper, Virginia, and additional storage facilities at Fort George G. Meade and Cabin Branch in Hyattsville, Maryland. The library's functions are overseen by the librarian of Congress, and its buildings are maintained by the architect of the Capitol. The LC is one of the largest libraries in the world, containing approximately 173 million items and employing over 3,000 staff. Its collections are "universal, not limited by subject, format, or national boundary, and include research materials from all parts of the world and in more than 470 languages".

The Thomas Jefferson Building, also known as the Main Library, is the oldest of the Library of Congress buildings in Washington, D.C. Built between 1890 and 1897, it was initially known as the Library of Congress Building. In 1980, the building was named in honor of Thomas Jefferson (1743–1826), a Founding Father, the principal author of the Declaration of Independence, and the third U.S. president. In 1815, the purchase of Jefferson's book collection formed a core foundation for the library's collection.

The building is located on First Street, S.E. between Independence Avenue and East Capitol Street in the federal national capital city of Washington, D.C., across from the United States Capitol on Capitol Hill. It is adjacent to the library's additional buildings in the Library of Congress complex, the John Adams Building (built in the 1930s) across Second Street, and the James Madison Memorial Building (built in the 1970s) across Independence Avenue to the south.

Washington, D.C., officially the District of Columbia and commonly known as simply Washington or D.C., is the capital city and federal district of the United States. The city is separated from Virginia to its southwest by the Potomac River and shares land borders with Maryland to its north and east. It was named after George Washington, a Founding Father and the first president of the United States. The district is named for Columbia, the female personification of the nation.

The U.S. Constitution in 1789 called for the creation of a federal district under exclusive jurisdiction of the U.S. Congress. As such, Washington, D.C., is not part of any state, and is not one itself. The Residence Act, adopted on July 16, 1790, approved the creation of the capital district along the Potomac River, and is considered the city's founding date. In 1800, when the capital was moved from Philadelphia, the 6th Congress started meeting in the then-unfinished Capitol Building, and the second president, John Adams, moved into the newly finished White House. In 1801, the District of Columbia, formerly part of Maryland and Virginia and including the existing settlements of Georgetown and Alexandria, was officially made the federal district; initially, the city was a separate settlement within the larger district. In 1846, Congress reduced the size of the district when it returned the land Virginia had ceded, including the city of Alexandria. In 1871, it made the entire district into a single municipality. There have been several failed efforts to make the district into a state since the 1880s, including a statehood bill that passed the House of Representatives in 2021 but was not adopted by the U.S. Senate.

The September 11 attacks, colloquially known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, then flew one into each of the Twin Towers at the World Trade Center in New York City, and another into the Pentagon, the headquarters of the U.S. Department of Defense, in Arlington County, Virginia. The fourth plane crashed in a rural Pennsylvania field during a passenger revolt. In response to the attacks, the United States waged the global war on terror over decades, to eliminate hostile groups deemed terrorist organizations, and the governments purported to support them.

Ringleader Mohamed Atta flew American Airlines Flight 11 into the North Tower of the World Trade Center complex at 8:46 a.m. Seventeen minutes later at 9:03 a.m., United Airlines Flight 175 hit the South Tower. Both collapsed within an hour and forty-two minutes, destroying the remaining five structures in the complex. American Airlines Flight 77 crashed into the Pentagon at 9:37 a.m., causing a partial collapse. The fourth and final flight, United Airlines Flight 93, was believed by investigators to target either the United States Capitol or the White House. Alerted to the previous attacks, the passengers revolted against the hijackers who crashed the aircraft into a field near Shanksville, Pennsylvania, at 10:03 a.m. The Federal Aviation Administration ordered an indefinite ground stop for all air traffic in U.S. airspace, preventing any further aircraft departures until September 13 and requiring all airborne aircraft to return to their point of origin or divert to Canada. The actions undertaken in Canada to support incoming aircraft and their occupants were collectively titled Operation Yellow Ribbon.

The United States Congress is the legislative branch of the federal government of the United States. It is a bicameral legislature, including a lower body, the U.S. House of Representatives, and an upper body, the U.S. Senate. They both meet in the United States Capitol in Washington, D.C.

Members of Congress are chosen through direct election, though vacancies in the Senate may be filled by a governor's appointment. Congress has a total of 535 voting members, a figure which includes 100 senators and 435 representatives; the House of Representatives has 6 additional non-voting members. The vice president of the United States, as president of the Senate, has a vote in the Senate only when there is a tie.

Capitol Hill is a neighborhood in Washington, D.C., located in both the Northeast and Southeast quadrants. It is bounded by 15th Street SE & NE, F Street NE, Southeast Boulevard SE, and South Capitol Street SE. Dominated by the United States Capitol, which sits on the highest point of Capitol Hill, it is one of the oldest historic districts in Washington. The neighborhood has a high concentration of rowhouses, largely dating from the 19th century. Home to around 35,000 people in just under 2 square miles (5 km), Capitol Hill is also one of the most densely populated neighborhoods in Washington. The name Capitol Hill is frequently used as a metonym for the U.S. Congress.

Capitol Hill is famed as a center of the United States government, home to numerous important institutions including the U.S. Congress, the Supreme Court, the Library of Congress, and more. Apart from government, the neighborhood is largely residential, but maintains notable commercial hubs along Pennsylvania Avenue, such as Eastern Market and Barracks Row.

Independence Avenue is a major east–west street in the southwest and southeast quadrants of the city of Washington, D.C., in the United States, running just south of the United States Capitol. Originally named South B Street, Independence Avenue SW was constructed between 1791 and 1823. Independence Avenue SE was constructed in pieces as residential development occurred east of the United States Capitol and east of the Anacostia River. Independence Avenue received its current name after Congress renamed the street in 1934.

Independence Avenue SW originally had its western terminus at 14th Street SW, but was extended west to Ohio Drive SW between 1941 and 1942. The government of the District of Columbia renamed the portion of the road in the southeast quadrant of the city, west of the Anacostia River, in 1950. Independence Avenue SE encircles the southern end of the former RFK Stadium before ending at East Capitol Street near the Whitney Young Memorial Bridge.

East Capitol Street is a major street that divides the northeast and southeast quadrants of Washington, D.C., United States. It runs due east from the United States Capitol to the DC-Maryland border. The street is uninterrupted until Lincoln Park then continues eastward around the RFK Stadium campus. East of the stadium, East Capitol crosses the Anacostia River via the Whitney Young Memorial Bridge and then goes underneath Route 295 before crossing into Prince George's County, Maryland, where it becomes Maryland State Highway 214.

The western stretch of East Capitol Street passes through the Capitol Hill and Hill East neighborhoods. East Capitol Street is home to the Folger Shakespeare Library, US-Asia Institute, Les Aspin Center for Government, East Capitol Street Car Barn, D.C. Armory, and the future New Commanders Stadium.

A government agency or state agency, sometimes an appointed commission, is a permanent or semi-permanent organization in the machinery of government (bureaucracy) that is responsible for the oversight and administration of specific functions, such as an administration. There is a notable variety of agency types. Although usage differs, a government agency is normally distinct both from a department or ministry, and other types of public body established by government. The functions of an agency are normally executive in character since different types of organizations (such as commissions) are most often constituted in an advisory role — this distinction is often blurred in practice however, it is not allowed.

A government agency may be established by either a national government or a state government within a federal system. Agencies can be established by legislation or by executive powers. The autonomy, independence, and accountability of government agencies also vary widely.