Which pair of events shows an accurate cause-and-effect relationship? Extinction of the buffalo-->passage of the Pacific Railway Act

Discovery of gold in the Black Hills-->Ghost Dance movement
begins

Passage of Dawes Act-->Further assimilation of Native Americans

Massacre at Wounded Knee-->start of Plains Indian Wars

Wounded knee massacre

Explanation:

This... Is a nasty and gnarly topic. The ghost dance was made to make the natives believe they were immune to bullets. They... Were not. Little bighorn was before the dance, Dawes, was to move them out. Wounded knee was after. Rest in peace Sitting Bull.

answer; i believe the correct answer is ( quakers);

c or d both can be the answer