Answer:
<em>The correct option is A) He argued that slavery was necessary, benefiting both slaves and slave owners</em>
Explanation:
John C Calhoun believed that slavery was not an evil act rather it was a positive good which benefited both the slave and slave owners. The claims made by John C Calhoun were on the grounds of white supremacy and paternalism. He was of the view that every society is ruled by a group of elites and it is the right of the slaves to serve the elites.
It was "Pythagoras" who was the <span>Greek geometer who founded a philosophical society that devoted itself to the study of mathematics, since he was one of the leading mathematicians of his day. </span><span />
During the invasion, the Japanese inflicted mass casualties on Chinese civilians, killing millions and displacing millions more.