Ancient Mesopotamia was the first civilization ever created. Three aspects that prove their civilization are: their ability to partly control their water system, their ability to write, and their art and architecture.
Ancient Mesopotamia's ability to control some to most of their water by using irrigation shows that Mesopotamia was an advanced civilization. Their irrigation systems show this because They show how much information the citizens knew. It shows that they were smart enough to know how they could get the water where they needed it to go.
The farmers could get as much water as they needed because of the two surrounding rivers, but they didn't know how to get the water where they needed it to go. After a lot of thinking, the farmers thought they could dig water ways or "canals" to get the water closer to the crops. This way they would have to transport the water by foot or by an animal hauling it.
This is a map, made most-likely by a farmer, of the irrigation systems in Babylonia.
Another aspect that shows Ancient Mesopotamia was advanced is their ability to write. This shows that they were intelligent enough to be able to read, write, and teach other people how to read and write. They were also able to share information and communicate with others. Their first from of writing was cuneiform. Cuneiform consisted of symbols that represented the sounds that letters make.
My last reasoning is their art and architecture. This shows that they had enough free time and knowledge to build and create these beautiful things. They made some art and architecture to give thanks to their gods. Other things were just used for amusement. The picture below is a temple used to worship the gods.