WORLD HISTORY

Detailed explanation-1: -Why do historians believe that cities in the Indus River valley had organized governments? Historians learned this through reading ancient texts. Historians believe this because the cities were built on a river. Historians think this because of the uniform nature of the cities.

Detailed explanation-2: -The town planning system of the Indus Valley civilization has impressed many archaeologists. They systematically planned their residential houses, public buildings, and streets and had proper drainage systems. All homes were well-connected to the drains of the roads.

Detailed explanation-3: -The most unique aspect of planning during the Indus Valley civilization was the system of underground drainage. The main sewer, 1.5 meters deep and 91 cm across, connected to many north-south and east-west sewers. It was made from bricks smoothened and joined together seamlessly.

Detailed explanation-4: -Indus Valley Civilization cities were characterized by sophisticated urban planning and included water control systems and grid-focused neighborhoods, with roads and alleyways laid out on the cardinal directions. Many of the roads were broad avenues that were paved in baked brick with elaborate drainage systems.

Detailed explanation-5: -This civilization lasted from 3300 BCE to 1300 BCE and flourished between 2600 BCE to 1900 BCE. It flourished along the Indus river basin, which spread across Pakistan. Two major cities of the civilization were Harappa and Mohenjo Daro. These two cities grew to accommodate 30, 000 to 60, 000 civilians.