# Source notes

This submission uses only the facts locked in the bounty brief:

- Mohenjo-daro was one of the largest cities of the Indus Valley civilisation, in present-day Sindh, Pakistan, and was at its height around 2500–1900 BC.
- Its built environment included grid streets, covered drains, standardised fired brick, and a great public bath; archaeologists have not found a palace, royal tomb, or monument to a named ruler there.
- A 2026 study by Adam S. Green, Iqtedar Alam, and Cameron Petrie measured differences in house floor area using the Gini coefficient.
- The whole-city measurement across the studied span was 0.44.
- Ur and Ugarit, contemporary West Asian cities with clearer evidence of elites, measured above 0.6.
- In the excavated DK-G South neighbourhood, the measurement fell to 0.23 by around 2100 BC while the city was growing and becoming more productive.
- The 0.44 city-wide value and the 0.23 neighbourhood value describe different scopes and are not presented as one continuous trend.

The artwork introduces no population estimate and does not claim that the Indus civilisation as a whole was egalitarian.