It is b beacause the American Association for restored peapole.
To draw a map of the round earth on a flat surface, Cartographers use map projections. There are several ways it can be done, but every type of projection distorts reality in some way. Scientists use a Tissot's indicatrix to quantify distortions that are introduced when creating a map
I hope I helped ^.^
The Native Americans defeated them in the battle of Little Big Horn in 1876
