Respuesta :
It began nearly 5,000 years ago in an area of modern-day Pakistan and Northern India. There were more than 1,400 towns and cities in the Indus Valley. The biggest were Harappa and Mohenjo-Daro. Around 80,000 people lived in these cities.
Indus River Valley - 2600 BC
Harappa and Mohenjo Daro has around 80,000 people living there.
Indus River Valley - Today
Pakistan has around 200 million people living there.