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! . ! . . Marriage and children 7 Presidency 1940 663,091 36.2% Mansfield Lovell 2.3.1 Concourses a and B William Whipple New Hampshire 1 Yes. 1920 437,571 32.2% Thomas Lynch Jr. South Carolina 1 Yes Main articles: Philadelphia Convention and United States Bill of Rights In October 1753 Dinwiddie appointed Washington as a special envoy to demand that the French vacate territory which the British had claimed.[e] Dinwiddie also appointed him to make peace with the Iroquois Confederacy and to gather intelligence about the French forces. Washington met with Half-King Tanacharison and other Iroquois chiefs at Logstown to secure their promise of support against the French and his party reached the Ohio River in November They were intercepted by a French patrol and escorted to Fort Le Boeuf where Washington was received in a friendly manner He delivered the British demand to vacate to French commander Saint-Pierre but the French refused to leave Saint-Pierre gave Washington his official answer in a sealed envelope after a few days' delay and he gave Washington's party food and extra winter clothing for the trip back to Virginia. Washington completed the precarious mission in 77 days in difficult winter conditions and achieved a measure of distinction when his report was published in Virginia and London.

. The five component parts of the district operated their own governments at the lower level the three cities within the district (Georgetown the City of Washington and Alexandria) operated their own municipal governments each with a continuous history of mayors Robert Brent the first mayor of the City of Washington was appointed directly by Thomas Jefferson in 1802 after the city's organization that year, 5.1 Return to Mount Vernon, Brandywine Germantown and Saratoga Uncle Tom's Cabin Beginning in the 19th century with increasing mining and agriculture upstream and urban sewage and runoff downstream the water quality of the Potomac River deteriorated This created conditions of severe eutrophication It is said that President Abraham Lincoln used to escape to the highlands on summer nights to escape the river's stench in the 1960s with dense green algal blooms covering the river's surface President Lyndon Johnson declared the river "a national disgrace" and set in motion a long-term effort to reduce pollution from sewage and restore the beauty and ecology of this historic river One of significant pollution control projects at the time was the expansion of the Blue Plains Advanced Wastewater Treatment Plant which serves Washington and several surrounding communities. Enactment of the 1972 Clean Water Act led to construction or expansion of additional sewage treatment plants in the Potomac watershed Controls on phosphorus one of the principal contributors to eutrophication were implemented in the 1980s through sewage plant upgrades and restrictions on phosphorus in detergents. Congress is directly responsible for the governing of the District of Columbia the current seat of the federal government. Defending the Revolution The Virginia General Assembly voted in February 1846 to accept the return of Alexandria and on July 9 1846 Congress agreed to return all the territory that had been ceded by Virginia Therefore the District's current area consists only of the portion originally donated by Maryland. Confirming the fears of pro-slavery Alexandrians the Compromise of 1850 outlawed the slave trade in the District although not slavery itself. First Lady Pat Nixon ushered in the era of jumbo jets by christening the first Boeing 747 at Dulles January 15 1970, 12 Further reading To prevent this Arlington held a referendum through which voters petitioned Congress and the state of Virginia to return the portion of the District of Columbia south of the Potomac River (Alexandria County) to Virginia On July 9 1846 Congress retroceded Alexandria County to Virginia after which the District's slave traders relocated to Alexandria.:292 the District's slave trade was outlawed in the Compromise of 1850 the penalty for bringing a slave into the District for sale was freedom for the slave. Southern senators and congressmen resisted banning slavery altogether in the District to avoid setting a precedent the practice remained legal in the District until after secession with the District of Columbia Compensated Emancipation Act signed by Lincoln on April 16 1862 which established the annual observance of Emancipation Day, The Virginia Slave codes of 1705 further defined as slaves those people imported from nations that were not Christian Native Americans who were sold to colonists by other Native Americans (from rival tribes) or captured by Europeans during village raids were also defined as slaves. This codified the earlier principle of non-Christian foreigner enslavement.