We introduced gambling and alcohol to the tribes. Oh, the horror!
And carbohydrates.
A lot of the Indian tribes already were raising corn (maize), beans, and various squashes (pumpkins, etc.), so they were consuming some carbs, pre-Columbo.
L.W.
"Always go straight forward, and if you meet the devil, cut him in two and go between the pieces." (William Sturgis, clipper ship captain, 1830s.)