What was the main reason given by Americans who supported the atomic bombing of Japan?

To end the war, becuase they didn't want to invade it, it was to risky and there would be alot of death, and since Germany had already fallen, dropping the bomb would be the easiest and risk free way of ending the war.

Revenge

Explanation: They wanted revenege on Japan after Pearl Harbor but they attacked Germany first.

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

1 > george s. boutwell

2 > general ulysses s. grant

3 > james a. garfeild

4 > adolph e. borie