And their gods, they had a polytheistic religion. And their gods took human form. Also, amongst the Sumerians, is where we think one of the first written languages developed. It wasn't the first, you also have the Egyptian hieroglyphics and we think written language emerged amongst the Harappans and the Indus Valley civilization and amongst the Chinese. But it was one of the first languages, this right over here is an example of a cuneiform tablet. This is a cuneiform tablet written in the script, cuneiform, developed by these ancient Sumerians. Now, when you talk about Mesopotamia, you'll talk about Sumerians, but we'll also talk about other civilizations that emerge.