Final answer:
The Haitian Revolution happened between 1791-1804, resulting in the abolition of slavery and the establishment of Haiti as an independent nation. The revolution also influenced the Louisiana Purchase, which doubled the size of the United States.
Thus, the correct option is C.
Step-by-step explanation:
Between 1791-1804, the Haitian Revolution occurred. It was a major slave uprising that led to the abolition of slavery and the establishment of the independent nation of Haiti.
The revolution had significant implications for the United States, as it ended France's plans to expand its presence in the Americas and ultimately influenced the Louisiana Purchase in 1803, which doubled the size of the United States.
Therefore, the correct option is c) The Haitian Revolution