Insects evolved from a group of crustaceans. The first insects were land bound, but about 400 million years ago in the Devonian period one lineage of insects evolved flight, the first animals to do so.
Mormons - escapes persecution and settled down in Utah
Chinese - suffered racial violence but also prospered economically
Christian missionaries - could spread their faith among American Indians
The answer is Naturalization
To become a naturalized citizen you must pass a basic civics test.
Conflicting ideologies, depression, division of cultural groups, invasion of Poland