In the 1920s, what hollywood industry became one of the country's leading businesses?

The correct answer is the film industry.

The motion pictures film was invented by Thomas Edison an American inventor who began by making short motion pictures. In the year 1903, a movie called “The Great Train Robbery” was the first to tell a complete story. It was then followed by a movie called “Birth of a Nation.” by   D.W. Griffith in the year 1915. In the early 1920s, film industry became one of the country's leading businesses in  Hollywood. Many American towns had a movie theater where  Most them went to see the movies at least once a week.

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