. ; ; Thirteenth Amendment to the US constitution 18 Dec 1865 United States territory 1848. The Washington Metropolitan Area is the ninth-largest television media market in the nation with two million homes approximately 2% of the country's population. Several media companies and cable television channels have their headquarters in the area including C-SPAN; Black Entertainment Television (BET); Radio One; the National Geographic Channel; Smithsonian Networks; National Public Radio (NPR); Travel Channel (in Chevy Chase Maryland); Discovery Communications (in Silver Spring Maryland); and the Public Broadcasting Service (PBS) (in Arlington Virginia) the headquarters of Voice of America the U.S government's international news service is near the Capitol in Southwest Washington. Elbridge Gerry was a member of the Massachusetts Provincial Congress 9 Health Pakistan: Islamabad is a purpose-built capital city; construction started in 1960 and was completed by 1966 replacing the traditional capital Karachi; Rawalpindi was used in the interim.
Important thinkers[show] History[show] An aerial photo a large white building with big pillars A 2017 study in the British Journal of Political Science argued that the British American colonies without slavery adopted better democratic institutions in order to attract migrant workers to their colonies. The U Street Corridor in Northwest D.C known as "Washington's Black Broadway" is home to institutions like the Howard Theatre Bohemian Caverns and the Lincoln Theatre which hosted music legends such as Washington-native Duke Ellington John Coltrane and Miles Davis. Washington has its own native music genre called go-go; a post-funk percussion-driven flavor of rhythm and blues that was popularized in the late 1970s by D.C band leader Chuck Brown; ; By the end of the 20th century notable success had been achieved as massive algal blooms vanished and recreational fishing and boating rebounded Still the aquatic habitat of the Potomac River and its tributaries remain vulnerable to eutrophication heavy metals pesticides and other toxic chemicals over-fishing alien species and pathogens associated with fecal coliform bacteria and shellfish diseases in 2005 two federal agencies the US Geological Survey and the Fish and Wildlife Service began to identify fish in the Potomac and tributaries that exhibited "intersex" characteristics as a result of endocrine disruption caused by some form of pollution.
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