What happened to the people here before Native Americans replaced them?

Every Native American stands on ground that once belonged to someone else. Their bones are here; why do none of their genes survive? How did those now

Every Native American stands on ground that once belonged to someone else. Their bones are here; why do none of their genes survive? How did those now calling themselves Native Americans come into possession of the land?

or:Every Native American stands on ground that once belonged to someone else. Their bones are here; why do none of their genes survive? How did those now calling themselves Native Americans come into possession of the land?

or:There is no clue about who came first or how they got here. It is fairly certain that they did NOT cross the Bering Sea on a land bridge. If you search for images of \"Olmec\

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