Where did the first limited-overs cricket match take place?

Context: In the 1960s, English county teams began playing a version of cricket with games of only one innings each and a maximum number of overs per innings. Starting in 1963 as a knockout competition only, limited-overs cricket grew in popularity and, in 1969, a national league was created which consequently caused a reduction in the number of matches in the County Championship. The status of limited overs matches is governed by the official List A categorisation. Although many "traditional" cricket fans objected to the shorter form of the game, limited-overs cricket did have the advantage of delivering a result to spectators within a single day; it did improve cricket's appeal to younger or busier people; and it did prove commercially successful.

The first limited-overs international match took place at Melbourne Cricket Ground in 1971 as a time-filler after a Test match had been abandoned because of heavy rain on the opening days. It was tried simply as an experiment and to give the players some exercise, but turned out to be immensely popular. limited-overs internationals have since grown to become a massively popular form of the game, especially for busy people who want to be able to see a whole match. The International Cricket Council reacted to this development by organising the first Cricket World Cup in England in 1975, with all the Test-playing nations taking part.

Answer: Melbourne Cricket Ground