Around 80 million cinema tickets sold per week in 1929.
1922: First colour films produced.
1927: Films with sound (Jazz singer)
1928: First animation films made (Steamboat willy)
Most Americans, despite not having televisions in their homes saw films on a weekly basis, at their local cinema.
Huge profit for film industry - $2 billion spent on cinema tickets per day.
Concept of celebrities such as Rudolph Valentino or Charlie Chaplin.