I think it might be c but I could be wrong
Democratic in a simplified sense<span>. We are bound by our Constitution which segments each power into the three branches of check and balances making us a constitutional federal representative democracy.</span>
Mesopotamia has two regions; the Sumer (south) and the Akkad (north). Sumer, the south region is the first known complex civilization, developing the first city-states in the 4th millennium BCE. It was in these cities that the cuneiform script appeared as the earliest known form of writing, in which invented by Sumerians.
The Byzantine Empire has kept the knowledge (scientific, medical and other) of ancient civilization for the modern world. Additionally it served as a protection for western Europe by protecting it from an invasion of other countries.
Missouri entered the union as a slave state
Massachusetts had a chunk taken off and created a free state of Maine
After 1820 no territory north of the 30'36 line could have slaves
