The United States. Americans formed multiple military campaigns in the islands located in the pacific to drive back the Japanese. Eventually, with the detonation of two nuclear bombs, we successfully pacified the Japanese threat.
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Since the development of industrial society, more and more jobs were replaced by simple machinery and it focus the spread of job availability to only several areas in united States.This caused the decreasing rate of wages or even employment within the u.s society, and the economic pressure eventually lead to class violence