Births on September 25

Bryan John Birch, English mathematician and scholar

Bryan John Birch FRS (born 25 September 1931) is a British mathematician. His name has been given to the Birch and Swinnerton-Dyer conjecture.

20 Feb

San Francisco-Oakland Bay Bridge
The Congress of the United States approves the construction of the San Francisco-Oakland Bay Bridge by the state of California.
19 Mar

Nevada
Gambling is legalized in Nevada.
23 Mar

Indian independence movement
Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for the killing of a deputy superintendent of police during the Indian struggle for independence.
1 Oct

Women's suffrage
Spain adopts women's suffrage.
7 Nov

October Revolution
The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.