Congress By jordan_veldhouse Period: Jan 1, 1780 to Jan 1, 1980 Congress. Mar 4, 1789 NYC Hall, 1st Congress of US met Jun 13, 1800 Congress moved to Bank of Patomic President at the time was John Adams Jun 5, 1812 First declaration ajourned no tax for war Jun 6, 1819 Capitol building rebuilt after British burned the building Jan 1, 1820 Missouri Compromise Apr 16, 1850 Clay Compromise Jan 1, 1860 Abraham Loncoln becomes President Jan 22, 1861 Senator Jefferson Davis gives an important speech Apr 12, 1861 Start of Civil War Jan 7, 1865 Abolition of Slavery Jun 9, 1865 Dome on Capitol finished Apr 2, 1917 Declaration of War against Germany Dec 7, 1941 Pearl Harbor Aug 16, 1973 Watergate