How did multilinear cultural evolution differ from unilinear cultural evolution?

In the context of anthropology, the transition from unilinear to multilinear theories represents a fundamental shift in how scholars understand cultural development.

Unilinear Cultural Evolution

Popularized in the 18th and 19th centuries, unilinear evolution posited that all human societies progress through the same fixed, universal stages—such as savagery, barbarism, and civilization—toward a single end point. Proponents like Lewis H. Morgan believed that because humanity shared a common origin, all cultures followed uniform channels of development. This approach was often used to justify racist hierarchies, as it implicitly ranked cultures based on their perceived proximity to Western civilization.123

Multilinear Cultural Evolution

By the mid-20th century, anthropologists like Julian H. Steward rejected these universal stages. Instead, they conceptualized cultural evolution as "multilinear," meaning societies follow diverse, independent paths of development influenced by their specific environments and historical contexts. While multilinear theorists argue that societies generally progress through technological adaptation, they maintain that there is no single, mandatory sequence of stages for all cultures. This perspective emphasizes that while cross-cultural similarities exist, each society produces unique social manifestations based on its own exigencies.34