1644-1645: First slaving venture helps legitimize bondage in Massachusetts
1652 Rhode Island slavery ban is not enforced
1676: Executions portend broad assault on Indigenous peoples
1705 Slave Codes deny rights, legalize barbarity
1739 Stono Rebellion fuels rise in militias
1773-1779: Black freedom petitions: "For the sake of justice, humanity"
1779: In New Hampshire, 20 enslaved Africans petition for freedom
1779: Pompey Brakkee: Wins compensation from Vermont enslaver
1783: Belinda Sutton: Fights to be paid for 50 years in bondage
1784: Black Freemasons spur activism, advance abolitionist cause
1787: Slave states boost their power with "three-fifths" pact
1829-1830: Pro-slavery mobs devastate Black Ohio communities
1831-1832: Brutal crackdown after Jamaica revolt sparks outcry
1833 Native leader designates “Days of Mourning” to mark colonists' arrival
1835-1836: Colonists win Texas independence, protect right to enslave
1837 Wendell Phillips: Powerful voice for abolition
1838: Abolitionists demand Congress restore free debate on slavery
1846 "Father" of Underground Railroad helps free 800
1850 Harsher Fugitive Slave Act is part of political deal
1850: Martin Delany: Abolitionist leader, champions Black self-reliance
1854: Wisconsin activists help escapees, challenge Fugitive Slave Act
1860: Last known slave ship carries over 100 captive Africans
1862 Congress frees all enslaved people in Washington, D.C.
1862 Republicans build on military wins to pass progressive laws