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.

u.s.a

china

india

and

japan

legislative branch:

one of the three branches of government divided between the senate and the house of representatives.

- creates or makes laws

- power to override a veto

executive branch:

one of the three branches of government, headed by the president.

- enforces or carries out laws

- power to veto a bill sent to it by congress

judicial branch:

one of the three branches of government, headed by the chief justice of the supreme court.

- interprets laws

- power to declare laws or actions by the government unconstitutional