Hush By Mikolaj Apr 7, 1776 Independence Apr 19, 1779 First Shots Fired Sep 17, 1787 Ratification of Constitution Apr 30, 1803 Louisiana Purchase Feb 14, 1820 Misouri Compromise Aug 22, 1831 Nat Turner Rebellion Mar 2, 1836 Texas Independence Feb 2, 1848 Treaty of Guadalupe Hidalgo Jan 29, 1850 Compromise of 1850 Mar 6, 1857 Dred Scott Decision Dec 20, 1860 sc secession Sep 17, 1862 Battle of Antietam May 18, 1863 Battle of Vicksburg Jul 1, 1863 Battle of Gettysburg