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Extensive farming combined with severe drought caused the Dust Bowl in the 1930s. Deep plowing on the Great Plains killed the natural grasses that kept soil in place, and the topsoil turned to dust and blew away.
Once the earth had been farmed and not enough nutrients were in the soil to continue farming the soil became dry. Dry soil promoted a drought. Without â¦water the loose soil caused by farming became very easy for the wind to pick up. All of these combined conditions led to the dust bowl.