Historically, why has the United States restricted trade to Cuba?

Question

Responses
A Because Cuba failed to allow the United States to annex the nation of Cuba after the Spanish American War.
B Because the United States did not want the Cubans to flood the American market with Cuban cigars.
C Because of Cuba's communist government and its failed protection of the human rights of Cuban citizens.
D Because Cuba is too close geographically to the United States for competition.

Answer 1

C Because of Cuba's communist government and its failed protection of the human rights of Cuban citizens.