One reason for both the french revolution (1789) and the cuban revolution (1959) was that

Although several years apart, either the French revolution in 1789 or the Cuban revolution in 1959 started because of similar reason such as a change in their government.  

On the one hand, French wanted a new constitution since they didn't have a real voice in the National Assembly and on the other hand, Castro led a force of rebels against the government of the dictatorFulgencio Batista, who had grabbed the power canceling the election where Fidel Castro would have won a seat on the Congress.

answer; /// i believe that the correct answer is (divison of labor);