Why does elliott refer to the "cornerstone speech" of alexander h. stephens in making his argument?

 The correct answer is : Because I wanted to mention evidence that the Civil War was about slavery, also to present diverse perspectives of Native Americans and their relationship with whites. Slavery was the main issue of the United States government. Stephens' speech was called the cornerstone because it describes the great reality of white supremacy and black inferiority on which secession and confederation are based.

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.

c. free trade can lead to low pay for workers in poorer countries.