Answer:
Migration is the movement of individual organisms into, or out of, a population. ... Immigration is the movement of individuals into a population from other areas. This increases the population size and growth rate. Emigration is the movement of individuals out of a population.
Explanation:
I think it is lower tax rates to invite people
Answer:
b
Explanation:
advances made in metallurgy
Asia, Africa, North America, South America, Antarctica, Europe, Australia