The 1968 Summer Olympics, officially known as the Games of the XIX Olympiad and commonly known as Mexico 1968, were an international multi-sport event held from 12 to 27 October 1968 in Mexico City, Mexico. These were the first Olympic Games to be staged in Latin America and the first to be staged in a Spanish-speaking country. They were also the first Games to use an all-weather (smooth) track for track and field events instead of the traditional cinder track, as well as the first example of the Olympics exclusively using electronic timekeeping equipment.

The 1984 Summer Olympics were an international multi-sport event held from July 28 to August 12, 1984, in Los Angeles, California, United States. It marked the second time that Los Angeles had hosted the Games, the first being in 1932. California was the home state of the incumbent U.S. President Ronald Reagan, who officially opened the Games. These were the first Summer Olympic Games under the IOC presidency of Juan Antonio Samaranch.