USA HISTORY

Detailed explanation-1: -The phenomenon was caused by a combination of both natural factors (severe drought) and manmade factors (a failure to apply dryland farming methods to prevent wind erosion, most notably the destruction of the natural topsoil by settlers in the region).

Detailed explanation-2: -What circumstances conspired to cause the Dust Bowl? Economic depression coupled with extended drought, unusually high temperatures, poor agricultural practices and the resulting wind erosion all contributed to making the Dust Bowl.

Detailed explanation-3: -The strong winds that accompanied the drought of the 1930s blew away 480 tons of topsoil per acre, removing an average of five inches of topsoil from more than 10 million acres. The dust and sand storms degraded soil productivity, harmed human health, and damaged air quality.

Detailed explanation-4: -The Dust Bowl was caused by several economic and agricultural factors, including federal land policies, changes in regional weather, farm economics and other cultural factors. After the Civil War, a series of federal land acts coaxed pioneers westward by incentivizing farming in the Great Plains.

Detailed explanation-5: -Option G i.e Prolonged drought and poor farming practices is the correct answer. The Dust Bowl is the period of severe drought and dust storms in 1930s in US and parts of Canada. It critically damaged the agriculture and ecosystem as well as rendered many people homeless.