History USA By facebooker_10220782378661185 1820 Missouri Compromise 1845 Texas entered The Union as a Slave State 1846 War with Mexico begins 1846 US settles dispute with Britain over Oregon 1848 The Treaty of Guadalupe Hidalgo 1850 The breakdown of The Compromise of 1850 1854 Kansas – Nebraska Act & Bleeding Kansas Up to 1961 1854 Formation of the Republican Party 1857 Dred Scott's Case 1859 The raid on Harpers Ferry 1860 Abraham Lincoln elected as president 1860 Union between South Carolina and the states of US is dissolved 1861 Four more states join The Confederacy 1861 Six other states secede from the US 1861 The Confederacy is established 1861 Lincoln's Inauguration
