I am pretty confident that the shelters were made from wood and bones. However, I could be wrong, so try to find another source. I hope that my "answer" was useful!
Answer: Batteries generate electricity by a chemical reaction. They can be connected inline to provide greater voltage, in parallel to provide greater amperage.
Rivers: the Tigris and Euphrates
Climates: Northern Mesopotamia's plateaus have a warm climate. Parts of this land receive enough rain for crops to grow. Southern Mesopotamia has hot summers and little rain.
The patriots and the loyalists. The patriots were the people who wanted to break away from Britain and the Loyalist were the people who wanted to stay under Britain power.
