[Dr. Sivana]

The history books all say Christopher Columbus discovered the New World.

Oh, heck. When I was in elementary school in the 1970s, we were using history books from the 1950s. Even then Leif Erikson was credited with beating Columbus. Columbus gets credit with making it stick. If you get there, and die and no one back home knows . . . no credit. If you get there, shrug your shoulders, and go back and no one knows what you found . . . no credit. If you think you found India, but found Hispaniola, but Portugal, England, Holland, and France are racing to check it out? Credit, and a bunch of cities, countries and a day named after you.

[Vaquero]

It was Columbus that caused migration and colonization the Americas.