Answer: Indo-Europeans were originally from the Steppes. They were nomadic and pastoral people who tamed horses and rode chariots.
They lived in tribes. Participated in some type of organized armed conflict using trade items and the heads served not only as tools.
Interacted with each other through trade.
The mother country did this to protect its trade from suffering loss. Achenwall's Observations on North America Gottfried Achenwall.
Shaka Zulu had a mental illness threatened to destroy the Zulu tribe
I don't know but just ask a teacher