Which of the following was not a key factor in the conditions that led to the dust bowl?
previous overcultivation of farmland
decreasing american demand for farm produce
unfavorable weather conditions
poor farming techniques regarding proper irrigation and acreage rotation

The correct answer is B. Decreasing American demand for farm produce

Explanation:

In U.S. history, the Dust Bowl is a term used to refer to a period of dust storms and severe drought during the 1930s that affected the agriculture in North America. It is believed this situation was caused by multiple factors that include the over-cultivation for decades; the lack of appropriate methods and techniques to avoid erosion by irrigating crops and rotation of them; changes in the weather conditions in the prairies and an increase in farm production that led to the over-cultivation in certain areas. Considering this, the one that was not a factor that led to the Dust Bowl is "decreasing American demand for farm produce" because during this historical period the demand for farms produce increased and this increase (not decreasing) was one of the factors that contribute to the Dust Bowl as agriculture was used inappropriately in extensive areas.

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operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings