What is it called when people move from one country, region, or place to another?

Explain in detail why hitler had over 6 million jewish people killed during the holocaust and why

Who was the last of the "good empire" a: commodus c: marcus aurelius b: trajan d: julius caesar

Which course of action did president carter propose in order to solve this problem for the next generation? a. contract with foreign nations to build wind turbines b. reduce federal spending on solar cell energy research c. drill fewer offshore wells to conserve marine life d. develop alternative energy sources