African crop exported during triangular trade

Ocean crossed during the Middle Passage

Anti-slave activists were called "__________".

Constitutional amendment that outlawed slavery and indentured servitude

A document that gives us first-hand historical information: _______________ source

1863 order written by Lincoln: the Emancipation ____________

Trade between three continents or parts: ________ trade

Inventor, mathematician, writer, astronomer and surveyor: Benjamin ______________________

First free settlement of Africans in America