Answer:
His view point changed about his heritage.
Explanation:
He used to be embarrassed by his grandpas appearance, but through out the story he learns to cope with who he is and his Indian heritage. He also doesn't mind the medicine bag anymore.
He thinks of it as an opportunity to be with family
This scene occurs after Gatsby's party showing that everyone was so drunk and in the moment. feeling like they are better than everyone else and not caring
It’s a natural cause can not be control.
I believe it's false but I'm not 100% sure.