7/4/1776 By pk19292 Jul 4, 1776 Independence Sep 17, 1787 Ratification of the Constitution Jul 4, 1803 Lousiana Purchase Mar 5, 1820 Missorui Compromise Aug 21, 1831 Nat Turner's Rebellion Mar 2, 1836 Texas Independence Feb 2, 1848 Treaty of Guadalupe Hidalgo Mar 6, 1857 Dred Scott Decision Jul 4, 1860 Battle of Vicksburg May 18-July 4 1860 Dec 20, 1860 South Carolina Secession Sep 17, 1862 Battle of Antietam Jul 1, 1863 Battle of Gettysburg July 1-3