What civilizations were a theocracy?

Several ancient civilizations operated as theocracies, where religious leaders held political power. Notable examples include ancient Egypt, where pharaohs were considered divine and served as intermediaries between gods and people. Similarly, the Sumerians in Mesopotamia had city-states governed by priest-kings, while the Aztec civilization in Mesoamerica also combined religious authority with political governance, with rulers seen as representatives of the gods.