West Virginia?
If not the Mississippi river
Arid and semi-arid regions often have to go through long periods of drought.A drought is basically a situation in which an area of land gets insufficient rainfall, causing a lot of suffering to those who inhabit these regions. Some of these drought-prone areas include deserts of Australia, parts of India and Sudan among others.
I'm pretty sure the answer is D "Only Roman citizens were allowed to fish and swim in it" although there is a possibilty of it being B because it was controlled by the Roman Empire.
The divine right allows royals to take the position as the head of the kingdom.