Then try this useless trivia?
Stock markets go as far back as the 11th century.
The New York Stock Exchange began in 1792.
The American Stock Exchange began in 1921.
It was the New York Stock Exchange that failed first,
bringing the others down.
It was not one single issue that caused the Great Depression.
There were several things that led to it.
Such as:
Stock Market Crash of 1929
Bank Failures
Reduction in Purchasing Across the Board
American Economic Policy with Europe
Drought/ Dust Bowl
And in the end, there were many things...