US History By 19430 Jul 4, 1776 US Independence Us gained independence Sep 13, 1788 Radification of US Constitution Apr 30, 1803 Louisiana Purchase Mar 3, 1820 Missouri Compromise Aug 21, 1831 Nat Turner's Rebellion Apr 21, 1836 Independence of Texas Feb 2, 1848 Treaty of Guadalupe Hidalgo Jan 29, 1850 Compromise of 1850 Mar 6, 1857 Dred Scott Decision Dec 20, 1860 South Carolina Seceded Sep 17, 1862 Battle of Antietam May 18, 1863 Battle of Vicksburg Ended July 4th Jul 1, 1863 Battle of Gettysburg Feb 26, 1877 Compromise of 1877