The spread of foreign diseases, extermination by white settlers, lack of food/game due to overhunting by settlers, forced sterilization of native American women by the U.S. government...
http://encyclopedia.jrank.org/articles/pages/6242/Forced-Sterilization-of-Native-Americans.HTML
well first of all it caused the native americans to become aggressive further escalating the conflict.
native americans baby
It was the fighting with the native Americans that caused all the conflicts between them. One of them were that when settlers came and sellted from europe,asia,africa spain and many other places.
Many native Americans succumbed to the diseases brought over by the Europeans, as they had no immunity.
land
it caused sickness from the explorers
Diseases, largely smallpox, brought by Europeans caused millions of deaths among the native Americans who had no resistance to these foreign diseases.
the native Americans were mad at the settlers for taking there land and the settles were scard of the native Americans
settlers wanted to take the land awayfrom the native Americans
measles
disease
-colonists encroached on their land -caused some massacres -sought to convert the Native Americans to their own religion