Acts are connected by two plot factors or turning details, with the 1st turning issue connecting Act I to Act II, and the 2nd connecting Act II to Act III. The conception in the three-act structure has actually been attributed to American screenwriter Syd Discipline who described plot composition in https://www.farukhnagarplots.com/government-pushes-infrastructure-in-farukhnagar-and-pataudi-boosting-demand-for-plots-floors/