A theocracy is a type of government where one or more priests rule in the name of a deity. A god or goddess is recognized as the supreme ruler, and the laws based on religious law. Democracies are considered to be the opposite of theocracies.
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 sun-god. In Japan, the emperor was the offspring of the sun-goddess. Tibet, Israel, and China were all once theocracies.