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  An outbreak of revolutionary violence stops immigration from Britian.
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  Natrulazation act required for citizenship 5 years of residency.
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  The first great wave of immigration, over 10milion immigrants arrieved from northern and western Europe.
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  Fourtheenth amendment 1868 granted citenzenship to people born within the united states regardless of their parents race, citenzenship, or place of birth.
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  Mexican revolution sends thousands of Mexican to the U.S and over the next twenty years nearly a million enter the US searching work.
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  Congress passes an act that refuses visas to foreginers whose presence in the U.S might endanger public safety.
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  No chinese could come in the contry. No chinese exclusion act is repealed.