The beginning of this period was marked by the Wall Street Crash, which
remains the single most devastating crash in U.S. stock market history. On
October 29, 1929, $10 billion (around $95 billion today) turned to dust. For
some, it took entire lifetimes just to break even from the losses made at this
point.
In the years leading up to Black Tuesday, the Dow was turning countless
men into millionaires. The market became a hobby for many ignorant investors,
who readily poured all their money into the stocks of companies (many of which
were fraudulent) that they didn’t understand.
When the government raised interest rates, panic ensued. Investors were
desperate to liquidate their stocks, but the money simply wasn’t there.
Unfortunately, banks also invested in stocks, and the panic led to a run on
those banks that reduced many to insolvency and failure. The country was thrust
into the Great Depression, and much of the world followed.