The invaders had horses and swords, the natives didn't.
They killed all the men and took the women.
“They killed all the men and took the women.”
If it was diseases that came with the newcomers, I’d expect them to hit men and women equally. The big difference between men and women seems like it must have been by choice.
The fact that it happened pretty quickly, means that the new folks had to be working at it pretty hard. It must have been a big part of their culture/economy. Maybe their religion.
Exactly.