… be seen in three Canadian territories and about a … 1900s, anthropologists thought that Native Americans had arrived in North America … provided unequivocal evidence that Native Americans had arrived in North … considerable insight to Native American history.… be seen in three Canadian territories and about a … 1900s, anthropologists thought that Native Americans had arrived in North America … provided unequivocal evidence that Native Americans had arrived in North … considerable insight to Native American history.