Answer :
The correct answer is "War broke out when white settlers pressured the government to take the land from American Indians. "
An example of this would be the Wounded Knee Massacre. This was a result of the discovery of gold on the Lakota Pine Ridge reservation in South Dakota. US citizens wanted to take this land from American Indians, as gold was a valuable commodity that could be sold to make a huge profit. Along with this, the American economy still relied on the gold standard.
This resulted in an armed conflict between members of the US military and the Lakota tribe.
The answer would be B. War broke out when white settlers pressured the government to take the land from American Indians.