Please helppp! No links, please!! What is another name for the "doctrine of nullification?"

A) nationalism doctrine

B) doctrine of 1824

C) states' rights doctrine

D) secession doctrine

How did inca develop their road system? a) they used mortar to hold the stones together.b) they built suspension bridges over rivers. c) they mixed copper and stone together to make the blocks.d) they laid roads in the cities, not in the less densely populated deserts.

According to the article, what did plato and aristotle have in common?

Supreme court cases can alter history? true or false