In additional to a decline in worldwide trade and bank failures, what is another cause of the great depression?

It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers.

the answer is a) to be able to obey them.

c) they were beaten and fired from their jobs.