The belief hat immigrants are inferior to the citizen's born in a country is called

Your correct answer would be nativism as that is the political policy that people native to a country are more important than those who are moving here from another country. 
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Cherokee  removal, part of the trail of tears, refers to the  forced  relocation between 1836 and 1839 of thecherokee  nation from  their lands ingeorgia, south carolina, north carolina, tennessee, texas, and alabama to the indian territory (present day oklahoma)  in  the thenwestern united states, and the resultant deaths