Four causes of the Great Depression were:
1. Stock market crash of 1929
2. Banking panics and failures
3. Reduction in consumer spending
4. Drought and agricultural collapse in the Midwest
The Great Depression impacted Oklahoma in significant ways. The state, already suffering from the Dust Bowl and agricultural struggles, experienced widespread poverty and unemployment. Many farmers lost their land due to foreclosures and had to migrate to other states in search of work. The state's economy was heavily reliant on agriculture, and the collapse of the farming industry exacerbated the economic downturn. The depression also led to a decrease in oil prices, which further hurt Oklahoma's economy as it was a major oil-producing state. Ultimately, the Great Depression had a devastating impact on Oklahoma, leading to increased poverty, unemployment, and social unrest.