VoiceTube 1/29 How did eating popcorn become a custom at the theaters?

At the beginning of 20th, eating popcorn at the theaters was not popular before the Great Depression.

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The reasons why eating popcorn become a popular custom are that the people could see the movie with 5 or 10 cents, the people affording cheap recreation such as see a movie at the theater, and that the vendors are allowed to sell popcorn or sort drinks in order to earn money as well as pay fees to the theaters.

In the end, nowadays people consider that eating popcorn is associated with the theaters and popcorn sales are the major portion of the theaters' revenue.