The correct answer would be, Indus Valley Civilization.
Harappa and Mohenjo Daro were two main cities of the Indus Valley Civilization.
Explanation:
Mohenjo Daro and Harappa are the cities, presently located in the Larkana District, Sindh and Sahiwal District, Punjab, respectively, in Pakistan. These cities were rediscovered in 1920's. These cities were main cities of Indus Valley Civilization. Both cities have been preserved after their discovery.
These cities are given so much importance due to the signs of advanced civilizations in both of the cities. Some important signs of their advanced civilization are described below:
- Both were expertly planned cities
- Streets were wide and straight with the grid pattern
- Cities were surrounded by thick walls
- Many people had sturdy brick houses
- Many houses were built with three floors
- Some houses even had bathrooms and toilets
- Their bathrooms and toilets were connected to the first sewer system of the world
- Many signs of sophisticated civil engineering and urban planning.
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