Do you know where your food is from?

WASHINGTON (AP) - November 24, 2011

You probably are and may not know it.

The Smithsonian Institution offers some history on the traditional Thanksgiving meal.

Scientist Bruce Smith says many dishes eaten today have roots in Mexico and South America.

The turkeys we're eating today are derived from Mexican turkeys.

Potatoes were domesticated in South America, likely Peru.

But Europeans likely brought them to the U.S. Squash, pumpkins and corn likely spread by trading among American Indian tribes.

And those cranberries?

They're native to the U.S. and American Indians first used them as food.

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