The answer would be White Man's Burden. It is a term that refers to the idea that Western people had a duty to civilize so-called “inferior” or nonwhite cultures. It was used to justify the European imperialism during the late nineteenth century.
Some could be terrorist and spies but some could just be wanting a normal life in the us
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I think its because they wanted to spread rule to places other countries haven't therefore the would get there first because other countries never thought of that.
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