Original: Montreal was awarded the rights to the 1976 Games on May 12 , 1970 , at the 69th IOC Session in Amsterdam , over the bids of Moscow and Los Angeles , which later hosted the 1980 and 1984 Summer Olympic Games respectively .
Simplified: The 1976 Summer Olympics , officially known as the Games of the XXI Olympiad , were held in 1976 in Montreal , Quebec , Canada .