us history class By Thomp871 Jul 4, 1776 declaration of independence May 25, 1787 ratification of united states constitution Apr 12, 1861 battle of fort sumter Jul 1, 1863 battle of gettysburg Jun 25, 1876 battle of little bighorn Oct 29, 1929 the years of great depresion end date is 1941 Jul 20, 1969 apollo 11 moon landing Sep 11, 2001 september 11 attack Sep 29, 2001 my birthday Jan 20, 2009 inauguration of barack obama