Today in Western Civ class I learned that cuneiform was the earliest recorded form of writing.  I also learned that The Fertile Crescent is called the Fertile Crescent because since the Tigris and Euphrates rivers are so close that when they flood they both leave behind a sediment known as silt, silt can be used as a manure that greatly helps the crop in there growth and helps the crops also provide a wealthy harvest.  I learned that a dynasty is when a family that has power passes it on from generation to the next, before I thought that a dynasty was how well a civilization did and how it grew overtime.  The Mesopotamians also believed in multiple gods, what this means is that if you made a sacrifice to the farming god then you would a good farming season, if you made a sacrifice to the fishing god you would have a good fishing season, and so on.