They brought horses. It was easier for them to catch up with the buffalo and hunt instead of having to throw weapons from a far and run after the Buffalo.
Depends some don't want to let go of the past, others it could be they are scared of being judged for what their ancestors did. They also might have PTSD this might give them flashbacks and scary dreams about things they might have seen.
Answer:
I think the answer is Minao
He made inventions that that saved the towns,he made inventions to help people in there everyday lives,he discovered electricity
