What are the various ways in which the development of the west during the post-Civil War era had an impact on Native American populations?

There were several negative impacts the developement of the west had on the Native Americans. Native Americans were pushed out of their land and they also were killed by the many diseases and infections from the westeners.

The correct answer to this open question is the following.

You did not mention the period of time in the history of Africa, so we are assuming that is after the Scramble for Africa, in which European superpowers started to grant independence to many African nations.

The kinds of political organization developed in Central and Southeastern Africa were intents for establishing democratic governments in which African citizens could have a voice in the election of their new leaders after so many years of European monarchies. However, this was only a good intention because, in reality, disorders and chaos followed the "decolonization years." Most of the Central and Southeastern countries lived periods of chaos were tyrants and dictators took advantage of the political situations and grasp the power to control the regions.