Answer:
.1- disease
2- forced assimilation
3- military technology
4- forced relocation
Explanation:
European contact with native Americans proved fatal for the native American population. Europeans who had superior military technology forced the native Americans to the interior of the continent. Native Americans had no immunity for the disease came with Europeans and this resulted in the near extinction of the native population. However, when the conflict began severe, attempt been made to assimilate the natives in European culture.