Question

During the 1920s, why did so many people heavily invest in the stock market?

Stocks were one way to make more money.
Banks were not offering very high interest rates.
People had a lot of extra money they didn't need.
Profiting companies were worth investing in.

Answer 1

Because stocks were one way to make more money.

Answer 2

inflation and printing of money make money devalue in other hand stock going up that why.