Answer:
Push-pull theory
Explanation:
Push-pull theory is important to study because it determines the reason to leave a place or attracted immigrants from other places in search of better economic opportunities, social security, etc. The push factors are those which force a population to leave their country and migrate to another place. Pull factors are those which give reason to the population from other countries settle in the foreign country for various reasons.
The United state did not want to be involve in world affair so theyvdecide to not sign the league of nation so stay canbe isolated.
The camps were inadequate from1933 to 1942, so your statement is false.
<span>Great Britain is your answer!</span>
