How did the movement of people (immigrants and internal migrants) transform American life (or the way that Americans live)?

Sparta faces threats from without and within the city-state who posed these threats.

World war i brought increased immigration to the united states from which country? germany france italy mexico

Why might the spanish government have approved of the encomienda system? a the system allowed for fair treatment of all under it, leading to a happy and prosperous colony. b the system used natives as slaves which meant the government was able to maximize their profit of exported goods. c the system allowed for mostly profitable trade within the different colonies. d the system was a great example of how to successfully run a colony, making spain a world power.