The President of the United States when the Stock Market collapsed was , he did not believe it was the responsibility of the government to bail people of businesses out of trouble. His lack of response caused the Depression to get worse.

Herbert Clark Hoover

Explanation:

The President of the United States when the Stock Market collapsed was Herbert Clark Hoover. He served as the 31'st president of the United States of America from 1929 to 1933 which is the exact time period of the Great Depression. Hoover was also an engineer, businessman, as well as a politician and died on October 20, 1964.

answer the amount a seller is paid minus the cost of production;

b or d if i'm correct boi.