Here’s the correct order of events that led to the Great Depression from your list:
- Farmers in the Great Plains enjoyed great prosperity starting at the turn of the century.
- The crop prices rose after the federal government purchased excess crops during World War 1.
- The need for extra crops decreased after the war, and the price of wheat dropped sharply.
- Farmers and ranchers mortgaged their farms to buy more land and equipment.
This sequence reflects how prosperity in farming led to overextension and debt when commodity prices fell.