Ethnicity refers to collective identity grounded in a believed common descent, together with shared markers of culture — language, religion, dress, diet, territory, historical memory. Max Weber's formulation remains the most precise: an ethnic group is one whose members hold a subjective belief in their common descent, whether or not any objective blood relationship exists. The emphasis on belief is the whole point. Ethnicity is not a fact of biology awaiting discovery but a claim about origins that becomes socially real when acted upon, and its supposed antiquity is often itself a modern construction.
Two further features distinguish ethnicity from other bases of group life. It is putatively ascriptive — membership is presented as given at birth rather than chosen — yet in practice it is situational, activated in some contexts and irrelevant in others. A man may be a Naga in Delhi, an Ao among Nagas, and a Christian in an argument about religion, invoking each identity as the situation requires.
Three accounts
Primordialism treats ethnic attachment as a deep, affective given. Clifford Geertz (1963) described the primordial sentiments of blood, language, race, region and custom in the new post-colonial states, and argued that they compete with the civil ties on which a modern state depends. Edward Shils and Pierre van den Berghe pressed the case further. The account captures something real — the emotional intensity of ethnic loyalty, and people's willingness to die for it, which instrumentalism explains poorly — but it cannot explain why identities appear, merge, split and vanish, nor why ethnic conflict is episodic rather than constant.
Instrumentalism treats ethnicity as a resource mobilised by elites in competition for power, jobs, land and state patronage. Paul Brass argued that ethnic identity is constructed and reconstructed by elites who select cultural markers, standardise them, and attach grievances to them in order to build political constituencies; ethnic conflict is thus the outcome of elite competition, not of ancient hatreds. The account explains timing and variation well but risks reducing ordinary people to dupes.
Constructivism occupies the productive middle: ethnicity is socially made, but once made it becomes durable, institutionalised and genuinely felt. Benedict Anderson's Imagined Communities (1983) showed how print capitalism, census enumeration and administrative classification made large-scale identities imaginable, and colonial ethnography in India — the census, the tribe-caste distinction, the Scheduled lists — is a textbook case of the state producing the categories it claims merely to record.
Boundaries rather than contents
Fredrik Barth's Ethnic Groups and Boundaries (1969) marked the decisive shift. Anthropology had treated ethnic groups as culture-bearing units and asked what was inside them. Barth argued that the analytically critical feature is the boundary that separates a group from others, and the rules of ascription and self-ascription that maintain it. Cultural content can change entirely — language lost, dress abandoned, religion converted — while the boundary persists; conversely, neighbouring groups may share almost all cultural traits and remain rigidly distinct. Boundaries are sustained precisely through interaction and exchange across them, not by isolation. This is why ethnicity does not dissolve with modernisation, urban migration or mass education, contrary to early modernisation theory.
Ethnicity, race and caste
Ethnicity is often confused with two neighbours. Race rests on a claim about inherited physical difference and is bound up with a history of biological determinism and colonial hierarchy; ethnicity rests on a claim about cultural difference and descent. Race is imposed from outside more often than claimed from within; ethnicity is more frequently self-asserted, which is why ethnic identity can be a vehicle of pride and mobilisation in a way racial classification rarely is.
Caste shares ascription, endogamy and the idea of shared substance with ethnicity, but differs in three ways: it is embedded in a hierarchy legitimated by ritual purity and pollution, it is tied to an inherited occupational order, and its groups are interdependent parts of a single local system rather than parallel communities. Ethnic groups typically claim difference and equality; caste groups are ranked. Yet the boundary blurs in practice. Sanskritisation, which M. N. Srinivas described, is a strategy of altering cultural content to shift position — the reverse of Barth's insistence on boundary maintenance — while caste associations in colonial and post-colonial politics behaved much like ethnic interest groups, and Ambedkar's account of endogamy as the mechanism that seals caste explains why boundaries endure without physical separation.
Ethnonationalism and identity movements in India
Ethnicity in India has been politicised chiefly along three axes.
Language. The demand that administrative boundaries follow linguistic community produced the Andhra agitation, the States Reorganisation Act of 1956, the Samyukta Maharashtra movement, and the anti-Hindi agitations in Tamil Nadu that entrenched the three-language compromise. Linguistic reorganisation is usually judged a success in containing ethnicity by accommodating it within federalism.
Tribe. Movements for Jharkhand, later Chhattisgarh and Uttarakhand, and the long-running assertion of adivasi identity, combined cultural claims with grievances over land alienation, forest rights and displacement by mining and dams. Virginius Xaxa argues that the Indian tribe is best understood as an indigenous people whose distinctiveness is produced by a specific history of dispossession rather than by isolation alone.
The North-East. Here ethnicity took its most explicitly national form. The Naga movement, the Mizo insurgency settled by accord in 1986, the Assam movement of 1979–85 over immigration and the resulting Assam Accord, and Bodo assertion within Assam show a recurring pattern: a claim to be a distinct nation, framed around a homeland and a threat from outsiders. Sanjib Baruah argues that Assamese sub-nationalism and Indian nationalism are not simply opposed but have grown entangled, each producing the other's grievances, and that categories such as "insider" and "immigrant" are political products of state policy — the Inner Line, the Sixth Schedule, autonomous councils and the National Register of Citizens.
Ethnicity and the nation-state
The nation-state's founding claim is congruence between a people and a polity, so every unassimilated ethnic group is a potential rival claimant. States respond by assimilation, accommodation through federalism and group rights, or repression. India's record suggests that accommodation works better than suppression: linguistic federalism defused language conflict, while denial hardened positions in the North-East and Punjab. But accommodation is self-perpetuating — each concession teaches the next group that ethnic mobilisation pays, producing demands for ever smaller homelands, as the sequence from Jharkhand to Telangana shows.
For the UPSC answer
Begin with Weber's subjective-belief definition to signal at once that ethnicity is constructed, then structure the theory as primordialism, instrumentalism and constructivism, naming Geertz, Brass and Anderson respectively and taking a constructivist position. Barth's boundary insight is your highest-value move: deploy it to explain why ethnic identity survives modernisation. Distinguish ethnicity crisply from race (physical claim, externally imposed) and from caste (ritual hierarchy, occupational interdependence, endogamy), and note Sanskritisation as a limiting case. Ground everything in India — the States Reorganisation Act, Jharkhand, the Assam Accord — and conclude that ethnicity is not a survival awaiting extinction but a product of the modern state, best managed by federal accommodation rather than assimilation.
References & further reading
- Weber, M. (1922). Economy and Society.
- Geertz, C. (1963). The Integrative Revolution: Primordial Sentiments and Civil Politics in the New States. In C. Geertz (ed.), Old Societies and New States. Free Press.
- Barth, F. (ed.) (1969). Ethnic Groups and Boundaries: The Social Organization of Culture Difference. Universitetsforlaget.
- Brass, P. R. (1991). Ethnicity and Nationalism: Theory and Comparison. Sage.
- Baruah, S. (1999). India Against Itself: Assam and the Politics of Nationality. University of Pennsylvania Press.
- Xaxa, V. (1999). Tribes as Indigenous People of India. Economic and Political Weekly, 34(51).