Independence By ka18856 Jul 4, 1776 Independence Sep 17, 1787 Ratification of the Constitution Jul 4, 1803 Louisiana Purchase Mar 3, 1820 Missouri Compromise Aug 21, 1831 Nat Turner Rebellion Mar 2, 1836 Texas Independence Feb 2, 1848 Treaty of Guadelupe Hidalgo Sep 20, 1850 Compromise of 1850 Mar 6, 1857 Dred Scott Decision