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.
I believe A. I am not 100% sure but that is my best guess.
U.S congressional distribution is the procedure by which chairs in the United States House of Representatives are disseminated in the midst of the 50 states rendering to the greatest current constitutionally instructed decennial survey.
