The Stock Market Crash of 1929 was a sharp collapse in share prices in the United States, beginning on Black Thursday, October 24, 1929, and reaching catastrophic proportions on the following Black Friday (October 25), Black Monday (October 28), and Black Tuesday (October 29). This stock market crash, also known as the “Wall Street Crash,” marked the beginning of the Great Depression.
On July 28 in Geneva, the International Convention on the Treatment of Prisoners of War was signed. A humane procedure was established for their detention, employment in labor, and correspondence with relatives. The USSR did not join the convention.
December 5 — Formation of the Tajik SSR.
Diplomatic relations with China were severed in July 1929 in response to China’s forcible seizure of the Chinese Eastern Railway (CER) and the arrest of thousands of its employees—citizens of the USSR.