I’m pretty sure it’s C. If it’s not. I truly apologize.
May sound weird i know but the answer is roaming pigs.
The answer is Dravidians, they were part of the Inca civilization, they were the natives of southern India. They were the first inhabitants.
I can tell you that the rivers were used for irrigation. The code of Hammurabi was a set of laws made by a Sumerian leader named Hammurabi. Land between to rivers is Mesopotamia. Cuneiform was symbols made by the Sumerians as a was to write and talk. Silk road was the Chinese trail of trade it also help spread Buddhism. Hope this is useful