Polytheism is a the belief in more than one god. Prior to the arrival of the European explorers, all MesoAmerican religions were polytheistic.
It is believed that polytheism has been the main religious view throughout human history. The best-known examples of polytheism in ancient times is Greece and Roman mythology.
Some recognizable Greek gods and goddesses include: Athena (Goddess of wisdom and warfare), Poseidon (God of the seas), Hades (King of the underworld and God of death), and Zeus (King of the gods and ruler of Mt. Olympus).
Some recognizable Roman gods and goddesses include: Venus (Goddess of love), Cupid (God of love), Apollo (God of the sun), and Saturn (God of time).
Today, Hinduism is the main polytheistic religion, which has over 300 million gods.