That last two and prolly the second one
Across the state, agriculture and the new industries of oil and lumber fell victim to the growing economic depression. The state's economy was further crippled by the devastating effects of the Dust Bowl.
They didn't because they weren't focused on it. It was the age of technological advancement, industry, wild parties and rich city slickers. The so called roaring twenties. Everyone was focused on factories and development that they didn't pay attention to the farmers.
Answer:
D
Explanation:
D would explain the isolationism of america, refusing to bring in any foreigners with foreign diseases to not "pollute the gene pool"
