The correct answer is A: Drought and D: Better-paying jobs.
In the 1930s, farmers from the Midwestern Dust Bowl states, especially Oklahoma and Arkansas, began to move to California. A drought outbreak in the 1930s allowed dust storms to carry away topsoil, darkening the sky even at mid-day, As families realized that the drought and dust storms would not end, some sold what they could not take and began to migrate southwest. Many hoped to become hired hands on California farms.
The first european settlers to establish colonies in the united states consisted of Spanish settlers.
After the collapse it become a "democratic" nation so US saw it as less of a enemy. Also, it become a lot weaker so it wasn't as big of a rival or threat to the USA. Allowing it to trade and work together on major projects.
Answer:
The development of organized religion.
Explanation:
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