The doctrine of nullification was practice to halt correctional power over states rights who exercised this doctrine

This doctrine was exercised by Southern states only.

It stated that states kept the authority to define in which circumstances federal government exceeded its powers, declaring acts to be void and of no force in their jurisdiction, previously considered unconstitutional. Initially stated by Thomas Jefferson and James Madison in the Virginia and Kentucky Resolutions of 1798–99, it was supported on the assertion that the Union was a compact of sovereign states, for instance, had the natural right to make such decisions.

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.

ghana achieved independence peacefully, while algeria gained independence through an armed struggle.