Hush By kj18899 Jul 4, 1776 Independance Sep 17, 1787 Adoption of the Constitution Mar 4, 1789 The US Constitution went into effect Dec 15, 1791 Ratification of the US Constitution Oct 1, 1804 Louisiana Purchase Mar 3, 1820 Missouri Compromise Aug 20, 1831 Nat Turner's Rebellion Mar 2, 1836 Texas Independence Feb 2, 1848 Treaty of Guadalupe Hidalgo Sep 1, 1850 Compromise of 1850 Mar 6, 1857 Dred Scott Decision Feb 1, 1861 Confederate States of America Seceed Jul 1, 1863 Battle of Gettysburg