Beginning in the Late 1790s, Which of the Following Events

Beginning in the late 1790s, which of the following events helped to shape the treatment of African Americans?

A) The rise of a widespread abolitionist movement in Virginia
B) The bloody slave revolt on Saint Domingue and the abortive slave insurrection in Virginia
C) The formation of political parties
D) Congress's attempts to abolish slavery
E) All of these choices