The main cause was because they had already established land but the white settlers took it from them. For Native Americans, this was unacceptable.
Their work was inspired by deep spiritual beliefs and the art seemed to be a universal language. There is a deep connection to the land and this is reflected in the traditional Creation stories that inspire much of the art. It was visually stunning and emotionally engaging.
President Theodore Roosevelt was a reformer president to the extent that he was a true progressive--especially when it came to domestic issues. He enforced labor laws that protected workers, and was one of the first true conservationists--carving out large chunks of land for national parks.
Most likely military, correct me if I’m wrong
The positives were that you actually had a home and the negative was that you had a part of the military. another positive was that you had to chance to cultivate the downside was that you had to give a set amount of your harvested crops to your duke/duchess or whoever owns said land. I hope this will give you some pros and cons to feudalism