American settlers continue to spread to the west and took land from Native Americans. As expansion continued, agreements were signed and they were broken with native americans losing their homes and land and force to move west. As Native Americans were forced to more to the west, they are not able to adopt to the environment they are moving to, so they died due to lack of food or diseases.
Answer:
because they are foreign countries and the americans would rather gain trust in them before they make deals with them.
Explanation:
About 100 miles got my answer from answer.com
They engaged in years of rebellion and eventually overthrow their own government i think
