1. What route did the ancestors of Native Americans take to get
to South America?

Siberia to Alaska across a land bridge now under the Bering Sea.

Early in the story when tom finds an indian skull in the woods which he kicks in temper. the devil then makes his appearance and, as tom surveys him, he notices that the devil is neither "negro" nor "indian." in fact, he has a "swarthy" complexion and is "begrimed with soot."

Ibelieve it's the pacific islands