What was the main cause of the dust bowl in the 1930’s?

The main cause of the Dust Bowl in the 1930s was a combination of poor agricultural practices, severe drought, and strong winds. Farmers in the Great Plains region had been using unsustainable farming techniques such as overgrazing, excessive plowing, and monoculture farming, which depleted the soil of nutrients and left it vulnerable to erosion. When the drought hit in the 1930s, there was no vegetation to hold the soil in place, and the strong winds turned the region into a barren wasteland of dust storms.