Planned cities:
Harappa and Mohenjo-Daro were planned cities that were part of the ancient Indus Valley Civilization. These cities were carefully laid out with well-planned streets, drainage systems, and buildings, indicating a high level of urban planning and organization.

Grid layout:
Both Harappa and Mohenjo-Daro had a grid layout with streets running in straight lines, intersecting each other at right angles. This grid pattern helped in organizing the cities efficiently and allowed for easy navigation.

Well-organized infrastructure:
These cities had well-developed infrastructure, including public baths, granaries, and a sophisticated drainage system. The streets were wide and well-maintained, and the houses were made of baked bricks, showcasing the advanced construction techniques of that time.

Centralized authority:
The presence of a centralized authority is suggested by the uniformity in the layout of the cities and the standardization of weights and measures found in the archaeological remains. This indicates that there was a governing body responsible for the planning and administration of these cities.

Conclusion:
In conclusion, Harappa and Mohenjo-Daro were planned cities that exhibited a high degree of urban planning and organization. The grid layout, well-organized infrastructure, and evidence of centralized authority point towards a sophisticated and advanced civilization that thrived in the the Indus Valley thousands of years ago.