Final answer:
The stockbroker and the doctor meeting in 1935 led to the foundation of Alcoholics Anonymous. However, the question seems to refer to the stock market crash of 1929, which included events like Black Tuesday and Black Thursday, heralding the Great Depression.
Step-by-step explanation:
In 1935, when a stockbroker and a doctor met, they founded Alcoholics Anonymous (AA), a support group aimed at helping those struggling with alcoholism. However, the detailed information you've provided seems to pertain to various historical events related to the stock market, including the stock market crash of 1929, specifically Black Tuesday and Black Thursday, and not the founding of AA. The stock market crash marked the beginning of the Great Depression and was characterized by massive sell-offs, financial panic, and significant losses of wealth. Examples include the rushed exchange of stocks, the failure of efforts by banks to stabilize the market, and the dire aftereffects on the American economy.