Civil War 1770-1832 By facebooker_3418247515121856 1740 Quaker Abolitionist Movements Period: 1770 to 1804 Prewar Northern Abolitionism and Emancipation 1776 Slavery legal in all U.S. Territories 1777 Vermont Abolishes Slavery Not yet a state, so not considered the first U.S. state to emancipate. 1780 Pennsylvania Emancipates First U.S. state to officially emancipate. Period: 1783 to 1804 Slaves Above Mason-Dixon Line Emancipate 1790 Slavery Slowly Declining Up To 1790 1794 The Cotton Gin 1800 Fundamental North vs. South Divisions Begin To Develop 1818 Missouri, A Slave State, Applies For Statehood 1819 Economic Depression 1819 Tariffs Become Major Division BTWN North And South 1820 Henry Clay Promotes The Missouri Compromise 1828 Tariff of Abominations Period: 1828 to 1832 Theory of Nullification