A theocracy is a type of government where one or more priests rule in the name of a deity. A god or a god is recognized as the supreme ruler, and the laws of the area are based on religious law.
Throughout history, there have been many nations and regions with a theocratic government. Ancient Egypt, for example, was a theocracy, and the pharaoh was the offspring of the sungod. In Japan, the emperor was the offspring of the sungoddess. Tibet, Israel, and China were all once theocracies.