Native American religions are the spiritual practices of the indigenous peoples of the Americas. Traditional Native American ceremonial ways can vary widely, and are based on the differing histories and beliefs of individual tribes, clans and bands. Early European explorers describe individual Native American tribes and even small bands as each having their own religious practices. Theology may be monotheistic, polytheistic, henotheistic, animistic, or some combination thereof. Traditional beliefs are usually passed down in the forms of oral histories, stories, allegories and principles, and rely on face to face teaching in one's family and community.