DARK SECRETS: Pumpkin or sweet potato pie there s a rich history behind both | Rare Historical Photos

For many Americans, the Thanksgiving feast just isn't complete until they dig into a slice of pumpkin or sweet potato pie — and for some, there's simply no room for both.

The two desserts have similarities — both are orange, sweet and have a bit of spice — but they have distinct histories that have led to dedicated followings.