The use of atomic bomb on Nagasaki and Hiroshima prevented the massive invasion into Japan that was scheduled for the fall of 1945. The United States has dropped two nuclear bombs on Nagasaki (August 6, 1945) and Hiroshima (August 9, 1945) after getting the consent of United Kingdom (as required and agreed upon in Quebec Agreement).
The first major domestic crisis of the US government under the Constitution resulted from the federal government exercising its new right to tax the states in order to bring in more revenue to pay down the war debt.
Delivering mail. Would be answer B
