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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.
The Dust Bowl in the plains during the 1930s was caused by over grazing of animals and poor farming techniques. Also the plains has a drought cycle and all of these occurred a â¦ t the same time around 1935-1940.