Mesopotamian religions were polytheistic, meaning they worshipped many gods and goddesses. The major deities included Anu, the sky god, and Enlil, the god of wind and storms. Each city-state, like Babylon and Ur, had its own patron deity, and people believed these gods controlled various aspects of life, such as agriculture, war, and fertility. Rituals and offerings were essential in Mesopotamian worship to gain favor from the gods. Temples, known as ziggurats, served as places of worship and were often the center of city life. Priests played a crucial role in conducting ceremonies and maintaining the relationship between the people and their deities.