US History events from 1st Semester By cavaliers_13 May 14, 1607 Founding of Jamestown Apr 19, 1775 Battle of Lexington and Concord Jul 4, 1776 The signing of the Declaration of Independence May 25, 1787 Constitutional Convention Oct 31, 1800 Election of 1800 May 2, 1803 Louisiana Purchase Mar 2, 1820 Missouri Compromise Dec 10, 1832 Nullification Crisis Apr 12, 1861 Battle of Fort Sumter Apr 15, 1865 The assassination of Abraham Lincoln