Who directed all three Godfather films?

Explanation

The Godfather I, II and III is an American film trilogy from 1972, 1974 and 1990, directed by Francis Ford Coppola. It is based on Mario Puzo's novel of the same name. Many big stars have participated in the trilogy. Robert Duvall was in both Godfather I and II, Robert De Niro was in II and III, Andy Garcia was in III, and Al Pacino was in all three.