Which of these films takes place the earliest?

The Phantom Menace is the first installment in the Star Wars prequel trilogy. The film is set 32 years before the original film, and follows Jedi Knight Qui-Gon Jinn and his apprentice Obi-Wan Kenobi as they protect Queen Amidala in hopes of securing a peaceful end to a large-scale interplanetary trade dispute. Joined by Anakin Skywalker—a young slave with unusually strong natural powers of the Force—they simultaneously contend with the mysterious return of the Sith.