Animism is one of the earliest forms of religious belief, which holds that the natural world and the elements within it, like plants, animals, rocks, wind, storms, etc., have a consciousness that affects the happenings of humanity and human society.
Religion is a cultural universal, meaning that all cultures have religious institutions, yet they are all different. All cultures try to answer the universal questions such as:
It is the human propensity to question these things, yet each culture has its own responses. Sociologists, therefore, are interested in the relationship of these responses to the society as a whole. Sociologists, in studying religion, acknowledge that the form that religion takes in each society is directly related to the society itself.
Animism represents one of the earliest attempts of a culture to answer its universal questions. Animism is typically found in hunter-gatherer societies--primitive societies where the men do the hunting, and the women and children do the gathering of produce from the environment.
In societies which are very tethered to nature, like hunter-gatherer societies and traditional Native American societies--which are still very close to nature--you will see evidence of animism, because it's a reflection of their engagement with the natural world and their inability to control the natural world. Being subject to the natural world's vicissitudes makes them view objects in the natural world as having a consciousness that affects human society.
Source: This work is adapted from Sophia author Zach Lamb.