I think D.All of the above was in the South America.
In 1834, the federal government had passed an act that designated the entire Great Plains as one enormous reservation, or land set aside for Native American tribes. In the 1850s, however, the government changed its policy and created treaties that defined specific boundaries for each tribe. Most Native Americans spurned the government treaties and continued to hunt on their traditional lands clashing with settlers and miners, with tragic results.
The government’s continuous changing of American Indian policy caused mistrust.

The voter participation measure shows how big was the turnout, that is, how many of the eligible voters actually voted in a community. The higher the turnout the higher degree of democracy in a country. It is measured because of noticing patterns and predicting future elections, especially when wanting to win an election since you can see who didn't vote and often find out why and change that.
I believe the answer is true, because he believe that it was important to keep any person or group from gaining complete control of the government. Hope my answer helped.
It started the civil war between the Union and the Confederacy