how has immigration affected the population of the united states.

how has immigration affected the population of the united states.
Answer
Brief Explanations:
Immigration has increased the population size, diversified the ethnic - racial composition, influenced age - structure by bringing in working - age adults, and contributed to urbanization and regional population shifts in the US.
Answer:
Immigration has increased population size, diversified ethnic - racial composition, influenced age - structure, and contributed to urbanization and regional population shifts.