There were many Environmental Challenges similar to mesopotamian and egyptian ones
Historians don't have deciphered the method of Indus writing and the Indus valley influenced an area much larger than mesopotamian and Egypts
NO one knows where the human settlements began. Archeologists found evidence in the highlands of agriculture and domestication of goats and cheeps
While Egyptians where building they're pyramids Indus Valley were laying the bricks of India's first cities, they built strong levees or earthen walls to keep water falls to keep water out of their cities
THE largest cities were; Kalibagan, Mohenjo-Daro, and Harappa
They had very good sophisticated city planning
Cities featured a fortified are is called a citadel
The streets in its grid system were as wide as 30 feet and 3 stories high, bathrooms were wastewater flowed out to the streets and then sewage pits outside the city
they built strong levees or earthen walls to keep water out of their cities
The cities were built on mud bricks platforms to protect it from the floodings
Archeologists have found more than 100 settlements mostly in modern day Pakistan. Indus valley civilization can be also Harappan civilization because of many archeological discoveries
Like the other two river valley civilizations the Harappan culture developed a written language