Answer:
Some historians, often called "traditionalists," tend to argue that the bombs were necessary in order to save American lives and prevent an invasion of Japan. Other experts, usually called "revisionists," claim that the bombs were unnecessary and were dropped for other reasons, such as to intimidate the Soviet Union.
The answer is B . The revolutionary war
The correct answer here would be the option C.
The United States since the Industrial Revolution have been an industrial and manufacturing society. But, over the years their industry shifted from manufacturing to services, as now instead of factories the large number of people is employed in the service industry. The shift happened among other things, the cheaper labor in different countries where the factory owners have decided to set up shop.
The peasants were frustrated with harsh conditions and the Tsar's apparent lack of interest in helping the poor