When the American film industry began to boom in Hollywood in the early 20th century, its success was built on the large numbers of films in the western, crime, and musical genres that were made by the major studios.
美國好萊塢電影工業在 20 世紀初興起，便與當時大片廠大量拍攝西部片、警匪片、歌舞片等類型風潮息息相關。