Why did president Harry S. Truman give the orders to use nuclear weapons on the Japanese cities of Hiroshima and Nagasaki?

What is zinn's approach to the study of history? what does he suggest occurs when history is told is the story of human progress?

Why would a person who believes in a strict interpretation of the constitution have a concern with the elastic clause? a) the elastic clause limits the ability of the government to respond to new needs of the nation. b) the elastic clause gives the supreme court original jurisdiction in a limited number of cases. c) the elastic clause allows congress to exercise powers not specifically listed in the constitution. d) the elastic clause guarantees that a citizen's property cannot be taken away with due process of law.

Ineed an answer asap. which is not a reason for the “era of good feeling”? a) economy in the us was booming. b) the united states was victorious in the war of 1812. c) the united states outlawed slavery. d) the federalist party was disbanded and the united states had one political party.