The evidence that suggests organized governments planned the Indus Valley cities includes the following:
- Mohenjo Daro was constructed on a strict grid pattern.
- Indus houses had highly developed plumbing systems.
These features indicate an advanced level of urban planning and governance. The use of a grid pattern for city layouts suggests deliberate planning, while sophisticated plumbing systems indicate a level of public works management typical of organized governments. The use of weights and measures by merchants and trade connections also reflects a level of economic organization, but the first two points are more directly indicative of city planning by an organized government.