High? LOL
And whatever state of development they were in, there they stayed while Europe flourished.
When mine doesn't include human sacrifices, the conclusion is pretty fucking easy.
A lot of folks especially white fools all embrace this stupid "noble savage" myth....
It's pointless to argue with them, I just wish I could send them back in time to go live with their "noble natives" and see if we can find their butchered bones later on.