Respuesta :
Actually it is D because the Enlightenment was a very very different time period that was a long time before the Abolition movement which in turn sparked the American Revolution
Answer:
The American Revolution
Explanation:
During the American Revolution, many people began to question the institution of slavery. The colonists wondered how they could be fighting for freedom from the British while the African Americans were still held as slaves. Following the victory in the Revolution, the northern states began to abolish slavery. Between 1790 and 1804, all of the states in the North passed emancipation acts.