The Ancient City Where Inequality May Have Fallen as It Grew
At Mohenjo-daro, a new measurement of house sizes challenges the idea that bigger cities must mean bigger economic gaps.
The City as a System
A large city can make inequality visible in stone. But Mohenjo-daro, in present-day Pakistan, complicates the familiar assumption that urban growth always concentrates wealth at the top. Its Bronze Age streets, drainage, public works and hundreds of residences belonged to an Indus civilisation that flourished roughly 2600–1900 BC.
In research published in Antiquity, Adam S. Green, Iqtedar Alam and Cameron Petrie revisit early excavation records and calculate Gini coefficients from residential floor area. A Gini coefficient summarises how unevenly a measured quantity is distributed; here that quantity is house area, not bank accounts.
The Unexpected Pattern
The researchers report that their house-area inequality measure declined over time, even as evidence of prosperity increased and the street plan developed. They interpret the result as consistent with governance that helped limit economic inequality.
- Measured proxy: excavated residence area reconstructed from older field records.
- Reported trend: less dispersion in that proxy through the city's development.
- Interpretation, not direct measurement: institutions may have restrained inequality.
What the Walls Cannot Tell Us
A bigger home need not equal a richer household in every case. The data cannot measure every person's possessions, labour, gendered access to resources or political power. Nor does a declining Gini based on house sizes prove the city was perfectly equal.
Still, the result makes a sharp point about invisible rules. Streets, amenities and institutions are decisions about how people share a city, not inevitable side effects of living close together.
A city can grow without its housing map becoming ever more unequal.
Mohenjo-daro offers a testable counterexample to a simple urban-doom story. The precise mechanisms of its governance remain a research question, not a decoded constitution.