What event coincides with the
recovery from the Great Depression?

World War II played only a modest role in the recovery of the U.S. economy. Despite the recession of 1937–38, real GDP in the United States was well above its pre-Depression level by 1939, and by 1941 it had recovered to within about 10 percent of its long-run trend path.

Explanation:

The total range of energy which reaches the Earth from the Sun is called the solar spectrum

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