The Following Questions Refer to the Excerpt Below

The following questions refer to the excerpt below.
"…Whenever the white man treats the Indian as they treat each other,then we will have no more wars.We shall all be alike-brothers of one father and one mother,with one sky above us and one country around us,and one government for all. Then the Great Spirit Chief who rules above will smile upon this land,and send rain to wash out the bloody spots made by brothers' hands from the face of the earth.For this time the Indian race are waiting and praying.I hope that no more groans of wounded men and women will ever go to the ear of the Great Spirit Chief above,and that all people may be one people."
Chief Joseph,"An Indian's View of Indian Affairs," 1879
-Which of the following was the most significant source of conflict between Americans and American Indians?

A) Nativism
B) The growth of industry
C) Competition for land and resources
D) The rise of segregation