How did the economic practices of the 1920s cause the Great Depression?

There were many aspects to the economy of the 1920s that led to one of the most crucial causes of the Great Depression - the stock market crash of 1929. The mass-production of the automobile changed the tide of consumer spending in the 1920s.

Explanation:

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.