Answer
Sitchin attributed the Anunnaki to the Sumerian culture. He claimed that the Anunnaki were the Sumerian gods, and that the Sumerians were descended from them. He also claimed that the Anunnaki visited Earth in ancient times, and that they were responsible for the creation of the human race. Sitchin's theories have been met with skepticism from mainstream scholars, but they have also attracted a large following of believers.