All of them here very recently. This isn't ancient history. It was practically last week in historical time. The evidence is they were running the planet without much opposition until as recently as 3000 years ago when a lot of them were deposed from Sumeria and Mesopotamia and went into exile in Khazaria.
The indians showed blankets made of red hair to the newest arriving explorers from Europe and told them they had literally just missed these assholes, their ancestors had fought and killed or drove off the last of them only a generation prior. Their heads were shorn and thousands of blankets were made of the hair of these giants as a token of their victory. It was said to be one of the few things that could have united the disparate indian tribes and when they lapsed back into quarreling it was only because they no longer had a common enemy in these cannibalistic, highly intelligent red haired giants.