The causes of the Haitian Revolution according to the diagram is that the Saint-Domingue's large slave population demands a social revolution.
This refers to the successful revolution by self-liberated slaves against French colonial rule in Saint-Domingue now known as Haiti.
Hence, the causes of the Haitian Revolution according to the diagram is that the Saint-Domingue's large slave population demands a social revolution.
Therefore, the Option C is correct.
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