January 12, 2010★★★★★
A magnitude 7.0 earthquake devastates Port-au-Prince and the surrounding region, killing hundreds of thousands of people.
Disaster· Haiti
January 1, 1994★★★★★
The North American Free Trade Agreement between the United States, Canada and Mexico takes effect, creating one of the world's largest trade blocs.
TreatyEconomy· United States, Canada, Mexico
October 5, 1988★★★★★
Chilean voters reject extending General Pinochet's rule, paving the way for a return to democracy.
Politics· Chile
April 2, 1982 – June 14, 1982★★★★★
Argentina seizes the Falkland Islands; Britain dispatches a task force and retakes the islands after a 74-day conflict.
War· Argentina, United Kingdom
July 19, 1979★★★★★
The Sandinista National Liberation Front enters Managua after dictator Anastasio Somoza Debayle flees, ending the Somoza family's rule.
Revolution· Nicaragua
March 24, 1976★★★★★
The Argentine military overthrows President Isabel Perón and installs a junta associated with the "Dirty War".
Politics· Argentina