The prosperity of the 1920s ended quite suddenly on

Toward the end of the decade in October 1929, the stock market crashed, and America's invested wealth suddenly lost $26 billion in value. Prosperity had ended. The economic boom and the Jazz Age were over, and America began the period called the Great Depression. The 1920s represented an era of change and growth.

Explanation:

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Explanation:

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.