C the increased outside contact due to the crusades
(C) For the longest time Europeans and other outsiders could not travel into central Africa due to the various disease they were not immune or accustomed to, as it meant almost certain death for anyone not native to the area.
Answer: Among the causes of the conflicts were the affranchis' frustrations with a racist society, turmoil created in the colony by the French Revolution, nationalistic rhetoric expressed during Vodou ceremonies, the continuing brutality of slave owners, and wars between European powers.
Explanation:
It was the Declaratory Act<span> of 1766.</span>
I think... It was "B" Entering the war on the side of GB