answer the 3 questions please

When and why did the united states enter world war 2

The enforcement clause of the fourteenth amendment states what congress had the authority to a. grant citizenship to people b. change the constitution c. enforce only the bill of rights d. make laws to apply the amendment

Which economic system has become associated with authoritarian governments and total control of the economy? a. capitalism b. mercantilism c. communism d. socialism e. barter