What event led to the U. S. purchase of the Louisiana Territory? A. The burning of a U. S. Navy ship in the First Barbary War
B. The U. S. Supreme Court's decision in Marbury vs. Madison
C. The successful Haitian slave revolt
D. Napoleon losing money in his European wars

A. The burning of a U.S. Navy ship in the First Barbary War

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.