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How did British anthropologists use descent theory to explain social order in societies without states?

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Large illustrated genealogical tree with detailed branches and leaves, featuring family names and a central family crest, representing the Lippincott family lineage. — Genealogy Genealogical tree of the Richard and Abigail Lippincott family in America, constructed and published by Charles Lippincott, 1880.

In the early to mid-20th century, British social anthropologists used descent theory to explain how societies without centralized state institutions maintained political and social order. Because these societies lacked bureaucratic machinery, anthropologists sought to understand how rights, duties, status, and property were transmitted across generations.1

Mechanisms of Social Order

British scholars, including A.R. Radcliffe-Brown, E.E. Evans-Pritchard, and Meyer Fortes, argued that kinship served as the primary framework for political organization. They focused on unilineal descent—tracing ancestry exclusively through either the mother’s or father’s line—to define discrete, bounded groups.1

These descent groups functioned as corporations:
* Collective Identity: Members held land in common and acted as a single unit in legal and political matters, such as warfare, feuds, and litigation.1
* Stability: By conceiving of themselves as undifferentiated and continuous, these groups provided a stable structure that replaced the need for state-level administration.1
* Segmentary Systems: Evans-Pritchard famously documented how segmentary lineage systems allowed leaderless societies to respond dynamically to conflicts through flexible alliances based on kinship ties.2