Which event in history is seen by many people as the beginning of the great depression in the united states?

The Great Depression was the worst economic downturn in the history of the industrialized world, lasting from 1929 to 1939. It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors.

the Stock Market Crash of 1929

Explanation:

During the 1920s many investors made money in the stock market; however, after the Stock Market Crash of 1929, the country got deep into the Great Depression and millions of Americans lost their savings.

porter is writing economic history because he is focusing on the cost of developing vaccines.

stick up my a**