March 20 Major Events in World History
1972
The first Provisional IRA car bombing in Belfast kills seven and injures 148 on 20 March 1972, intensifying The Troubles in Northern Ireland.
1985
Libby Riddles becomes the first woman to win the Iditarod Trail Sled Dog Race on 20 March 1985, completing the 1,135-mile Alaskan race in dominant fashion.
1987
The U.S. FDA approves the first AIDS drug, AZT, on 20 March 1987, providing the first antiretroviral treatment for HIV/AIDS.