The correct answer is D :)
"A. The U.S. government violated many of the treaties it had negotiated with Native American tribes" "<span>C. Gold miners, farmers, and cattle ranchers laid claim to Native American lands" and "D. White politicians ignored the concerns of Native American voters in their districts" are all correct. There was an inherent lack of trust between whites and the Natives.</span>
<span>Changes 1970's China: first Chairwoman of the People's Republic of China, China launches first space satellite.
I hope my answer can help you!:)</span>