I think it’s a special purpose map
The Inca used those metals to decorate their palaces and had silverware, cups and dishes made of them.
Of course, only royalty had that.
They are farther away from the path of the sun. The equator is almost always directly in the pathway on the sun, while the poles aren’t.
The mission of the U.S. Fish & Wildlife Service is to "working with others to conserve, protect, and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people."
