What geographic conditions of mesopotamia made it possible for people to find there

In a repredentive democracy: a.) people come together in large meetings to vote on public policy b.) the people govern themselves c.) political power is held by a small group of people d.) people elect officials to run the government for them

Evaporite rocks te more permeable than reef rocks true false

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!