Folk religions are localized spiritual expressions of pre-scientific and pre-technological cultures with a deep link to nature and oral tradition. They are characterized by being localized to a particular geography, viewing the world in a holistic sense where the sacred and mundane are interconnected, relying on oral traditions rather than written texts, incorporating rituals, shamanism, animism and other beliefs. When folk religions encounter universal religions, they may die out, be affirmed in a modified form, or actively appropriate elements of the new religion according to their own cultural ways of thinking.