The Dust Bowl that afflicted the United States in the 1930s led to many changes in farm policy from the federal government. These policies tried to address the farming practices that led to the Dust Bowl by tailoring agricultural practices to the specific conditions in an area. Which of these did NOT contribute to the Dust Bowl?

Massive industrial agriculture operations disturbed the solid with large petroleum powered equipment.  

Explanation:

The period of dust storms that damaged the agriculture and ecology of Canadian and American prairies during 1930's is called dust bowl. It is called Dust Bowl because choking dust and high winds swept the region from Texas to Nebraska killing livestock and people, the crops also failed in the region affected by Dust bowl.  

Extended drought coupled with economic depression, poor agricultural practices, high temperatures and wind erosion all contributed to the Dust Bowl.  

The farmers lost their homes and livelihood, and their crop prices fell below the subsistence level due to the Great depression. More than one hundred million acres of the southern plains turned into a wasteland, Texas, Kansas, Oklahoma, New Mexico and Colorado were most affected. There were 14 dust storms in 1932 and 38 in 1933.

The federal government sent the aid to the drought affected states in 1932.

payments were made after the 1940s.

in the 1980s, a commission held investigations and made recommendations.

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.