many of these stones are still standing. A new federal city was then constructed on the north bank of the Potomac, to the east of Georgetown. On September 9, 1791, the three commissioners overseeing the capital's construction named the city in honor of President Washington. The same day, the federal district was named Columbia, a feminine form of Columbus, which was a poetic name for the United States commonly used at that time. Congress held its first session there on November 17, 1800. Congress passed the District of Columbia Organic Act of 1801, which officially organized the district and placed the entire territory under the exclusive control of the federal government. The area within the district was organized into two counties, the County of Washington to the east and north of the Potomac and the County of Alexandria to the west and south. After the Act's passage, citizens in the district were no longer considered residents of Maryland or Virginia, which ended their representation in Congress. Burning during War of 1812 On August 24–25, 1814, during the War of 1812, British forces invaded and raided Washington, D.C. in what is known as the Burning of Washington. In the attack, the U.S.Capitol, Department of the Treasury, and White House were burned and gutted. Most government buildings were repaired quickly; however, the Capitol was largely under construction at the time and was not completed in its current form until 1868. Retrocession and the Civil War In the 1830s, the district's southern territory of Alexandria declined economically due in part to neglect of it by Congress. Alexandria was a major market in the domestic slave trade and pro-slavery residents feared that abolitionists in Congress would end slavery in the district, further depressing the local economy. Alexandria's citizens petitioned Virginia to take back the land it had donated to form the district through a process known as retrocession. The Virginia General Assembly voted in February 1846, to accept the return of Alexandria. On July 9, 1846, Congress went further, agreeing to return all territory that Virginia had ceded to the district during its formation. This left the district's area consisting 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. The outbreak of the American Civil War in 1861 led to the expansion of the