-
Europeans used gold and salt to trade Africans. 11 million slaves crossed the Atlantic. https://en.wikipedia.org/wiki/Middle_Passage
-
Many states abolished slavery. Pennsylvania, Massachusetts, Ohio, New Jersey
-
The act prohibited slavery nationally. https://buildnationblog.wordpress.com/2016/02/26/act-to-prohibit-the-importation-of-slaves/
-
The Missouri enters the United States as a slave state and Maine as a free state. The compromise prohibited slavery north of 36-30 line https://en.wikipedia.org/wiki/Missouri_Compromise
-
California admitted as a free state. As a compromise, a fugitive slave law requires runaway slaves to be returned to their owners http://www.ushistory.org/us/30d.asp
-
proposed that slavery would be left to popular vote in the territory.
-
The Supreme Court determined that slaves did have rights because they were owned by ownvers. https://en.wikipedia.org/wiki/Dred_Scott_v._Sandford
-
issued during the Civil War by President Lincoln which freed slaves in southern states still in rebellion. https://en.wikipedia.org/wiki/Emancipation_Proclamation
