Spain cedes Louisiana to France via the Third Treaty of San Ildefonso.
World War I: Arab forces under T. E. Lawrence, also known as "Lawrence of Arabia", capture Damascus.
The Soviet Union introduces its first five-year plan.
Spain adopts women's suffrage.
World War II: USS Grouper torpedoes Lisbon Maru not knowing she is carrying British PoWs from Hong Kong
The People's Republic of China is established and declared by Mao Zedong.
Xinjiang Uyghur Autonomous Region is established.
Concorde breaks the sound barrier for the first time.
Pope John Paul II begins his first pastoral visit to the United States.