Nativists were a group of Americans who shared an ideology in anti-immigration. They feared that immigrants would take away jobs from Americans, as they would work for less wage. They also feared that their cultural and ethnic differences would hinder the white protestant male's status in the United States.<span />
That is the answer right there
American Revolutionary War :)
<span>Ieyasu Tokugawa was responsible for Japan's isolation from westerners
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