Final answer:
Nativists believed in prioritizing White Americans with older family trees and rejecting outside influences. They hoped to prevent the migration of nonwhites, non-Protestants, Jews, and other 'new' immigrants.
Step-by-step explanation:
Nativists believed in prizing White Americans with older family trees over more recent immigrants and rejecting outside influences in favor of their local customs. They also stoked a sense of fear over the perceived foreign threat. Nativists hoped to prevent the migration of nonwhites, non-Protestants, Jews, and other 'new' immigrants from Central and Southern Europe, as well as Native Americans who were not part of their vision for a white, Anglo-Saxon, and Protestant America.