The Stone Age was a time of great exploration, the reason the Irish have black hair is due to stone age Chinese explorers, then after that the Irish discovered north America, they landed in Newfoundland and traveled as far south as Boston.
Indian language reflects the Irish influence, an Irishman was holding a hatchet and pointed at an eagle flying saying to his friend "look Tom, a hawk!" & the natives thought he was talking about the hatchet and they started calling it a "tomahawk"