What movie set the stage for the blockbuster film in the early '70s?

The Godfather is a 1972 American film directed by Francis Ford Coppola. The sponsor was released on March 15, 1972: the first weekend he won 30 million dollars and ended up collecting 134,966,411 in the United States alone and more than $ 110,100,000 internationally. In total, he added $ 245,066,411 in collections, a very considerable figure considering that his budget was 6 million dollars