Polytheism

Polytheism
Is the practice of believing in more than one deity, as opposed to monotheism, believing in only one deity. The practice was common place all over the world until Pharaoh Amenhotep IV (later Akhenaten) institued the cult of Aten, a single solar deity to replace (albeit temporarily) the Egyptian pantheon. His changes would be overturned after his death, making the next notable account of monotheism Judaism, a sect of which (Christianity), would later go from a banned cult to the official religion of the Roman Empire. Polytheism is still practiced toady in many parts of the world, though the two largest religions (Christianity and Islam) are both monotheistic.