The answer is C.
d. the US and Mexico never unified.
a. Had a rise of more dictators.
The reason why the British intervenes in Haiti is mainly because they are a long term enemy of France, which was Great Britain's allies. The invasion of the European people in the Haitian land lead into a Haitian Revolutionary War (which was for anti-slavery and anti-colonial.)
The answer is the black plague.
Answer: It’s considered the turning point of the entire American Revolution, because it resulted in the French alliance.
Explanation: It was between the Hessians and British regulars vs. American militia and the American Continental Army