May 28 is National Hamburger Day

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Sunday is National Hamburger Day.

The hamburger, which originated in Hamburg, Germany, has become a staple of American food.

But do you know which American burger chain is the oldest? And the number of hamburgers sold may shock you.

Check out the video above for full details and have a happy National Hamburger Day!

Read the original version of this article at www.1011now.com.