The industrial revolution implemented new working structures and systems. Workers were underpaid while working exhaustively, leading the creation of minimum wages and decent working conditions. With the industrial expansion, the proletarian class grew exponentially, promoting the birth of this huge economical class and all their social influence. During this period some concepts such as utilitarianism and socialism were born.
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Answer:
Wilson cited Germany's violation of its pledge to suspend unrestricted submarine warfare in the North Atlantic and the Mediterranean, as well as its attempts to entice Mexico into an alliance against the United States, as his reasons for declaring war.
There are many ways but one would be that when people are too patriotic, their judgement of what is right and what is wrong can be clouded.