Title: Constitution Avenue
Content:  Constitution Avenue is a major east–west street in the northwest and northeast quadrants of the city of Washington, D.C., in the United States. It was originally known as B Street, and its western section was greatly lengthened and widened between 1925 and 1933. It received its current name on February 26, 1931, though it was almost named Jefferson Avenue in honor of Thomas Jefferson. Constitution Avenue's western half defines the northern border of the National Mall and extends from the United States Capitol to the Theodore Roosevelt Bridge. Its eastern half runs through the neighborhoods of Capitol Hill and Kingman Park before it terminates at Robert F. Kennedy Memorial Stadium. Many federal departmental headquarters, memorials, and museums line Constitution Avenue's western segment.
Title: Constitution Avenue
Content:  Between Louisiana Avenue and Interstate 66, Constitution Avenue is part of the National Highway System. Sections of Constitution Avenue are designated U.S. Route 1, U.S. Route 50, or both. Specifically, U.S. 50 runs along the road from its west end to 6th Street NW (eastbound) and 9th Street NW (westbound). U.S. 1 northbound uses the eastbound lanes of Constitution Avenue NW from 14th Street NW to 6th Street NW; southbound U.S. 1 used to run west from 9th Street NW to 15th Street NW but now continues straight through the 9th Street Tunnel to I-395.
Title: Constitution Avenue
Content:  The western terminus of Constitution Avenue is the Theodore Roosevelt Bridge; thus, Constitution Avenue connects the city's ceremonial core with Interstate 66. The eastern terminus is at 21st Street NE, just west of Robert F. Kennedy Memorial Stadium. Through traffic is diverted via North Carolina Avenue NE and C Street NE to the Whitney Young Memorial Bridge.
Title: Constitution Avenue
Content:  Constitution Avenue NW is bordered by a number of important buildings and attractions. Beginning in the west are several independent federal agencies and institutes, as well as the headquarters of several large associations. These buildings include the United States Institute of Peace Headquarters, the American Institute of Pharmacy, the National Academy of Sciences, the Federal Reserve, the Department of the Interior, and the Organization of American States. The Ellipse, part of the grounds of the President's Park (which includes the White House), also borders the north side of Constitution Avenue NW and forms the boundary between the western and eastern segments of this part of the street. To the east on the north side is Federal Triangle, which contains 
Title: Constitution Avenue
Content:  headquarters of a number of federal agencies. These include the Department of Commerce, Department of Justice, Environmental Protection Agency, Federal Trade Commission, Internal Revenue Service, and National Archives. The Embassy of Canada and John Marshall Park are located further east of Federal Triangle. Once past Pennsylvania Avenue NW, the E. Barrett Prettyman United States Courthouse, George Gordon Meade Memorial, and Department of Labor headquarters, and Senate Park border the north side of the avenue. On its south side, Constitution Avenue NW is bordered by several monuments and museums. These include Lincoln Memorial, Vietnam Veterans Memorial, Constitution Gardens, and the grounds of the Washington Monument. The relocated U.S. Capitol Gatehouses and Gateposts are at Constitution Avenue NW and 15th Street 
Title: Constitution Avenue
Content:  the city said it would build only a 72 ft wide street between North Capitol Street and 1st Street NW, an 80 ft wide street between 1st and 2nd Streets NW, and an 80 ft wide street between Pennsylvania Avenue NW and 6th Street NW. But a difficult decision about how to link the two sections of Constitution Avenue NW between 3rd and 6th Streets NW remained. Pennsylvania Avenue NW cut diagonally northwest-to-southeast through these three city blocks, and it was not readily apparent how to handle the crossing so that Constitution Avenue traffic could turn right and left from either direction. The section of the roadway between 6th and 14th Streets NW also remained to be widened. But with the Great Depression worsening, highway construction funds were minimal.
Title: Constitution Avenue
Content:  As the nature of the B Street project became apparent, there were calls to rename the street. In early 1930, legislation was introduced in the House of Representatives to rename the road L'Enfant Avenue. City officials opposed the name, however, advocating instead for Lincoln or Washington avenue. Representative Henry Allen Cooper of Wisconsin subsequently introduced legislation in June 1930 to rename the street Constitution Avenue, a proposal which met with strong approval from the city. Although the House initially rejected the name, the legislation passed both the House and Senate in the second session of the 71st United States Congress. President 
Title: Constitution Avenue
Content:  East of the grounds of the Washington Monument are several museums: the National Museum of African American History and Culture (under construction as of 2013), the National Museum of American History, the National Museum of Natural History, National Gallery of Art Sculpture Garden, and the National Gallery of Art. Once past the National Gallery of Art, the ground of the United States Capitol border the south side of the avenue. The north side of Constitution Avenue NE features the Russell, Dirksen, and Hart Senate office buildings. The roadway passes through the Capitol Hill and Kingman Park neighborhoods, and on its south side is bordered by the football stadium of Eastern High School between 17th and 19th Streets NE.
Title: Constitution Avenue
Content:  city used $30,494 in PWA grant money and $45,741 in federal gas tax revenue to widen Constitution Avenue to the full width between North Capitol Street and 2d Street NW. This project, which occurred in conjunction with clearance of Upper Senate Park, began in late September 1933. City officials also asked the CFA to approve widening of Constitution Avenue to the full width between Virginia Avenue NW and the Potomac River. The CFA quickly approved the project. Paving of the fully widened street began in October 1933 and continued in November. In December, the avenue neared completion with the installation of traffic lights between 6th and 15th Streets NW.
Title: Constitution Avenue
Content:  northward, and the eastern section slightly southward. The one-block section of Pennsylvania Avenue NW between 4th and 5th Streets was renamed Constitution Avenue (leaving Pennsylvania Avenue no longer contiguous). To control these two intersections, 10 traffic signals (some of the first to be installed in downtown D.C.) were placed at these intersections. The intersection opened on August 17, 1933. The lack of uniform width along Constitution Avenue proved problematic. With little fanfare, the city began widening the entire roadway to 80 ft. In September 1933, the city received the first disbursement of revenue from the federal gasoline tax. This tax was imposed in the Revenue Act of June 1932. 

Question: In what country is Constitution Avenue?
Answer: United States of America.
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