Original sentence: A total of 1,022 cities and settlements had been found by 2008, mainly in the general region of the Indus and Ghaggar-Hakra Rivers, and their tributaries; of which 406 sites are in Pakistan and 616 sites in India; of these 96 have been excavated.At its peak, the Indus Civilisation may have had a population of over five million.Inhabitants of the ancient Indus River valley developed new techniques in handicraft (carnelian products, seal carving) and metallurgy (copper, bronze, lead, and tin).The Indus Valley Civilisation (IVC), or Harappan Civilisation, was a Bronze Age civilisation (3300–1300 BCE; mature period 2600–1900 BCE) mainly in the northwestern regions of South Asia, extending from what today is northeast Afghanistan to Pakistan and northwest India.The Indus Valley Civilisation is also named the Harappan civilisation after Harappa, the first of its sites to be excavated in the 1920s, in what was then the Punjab province of British India
Edited sentence: A total of 1,022 cities and settlements had been found by 2008, mainly in the general region of the Indus and Ghaggar-Hakra Rivers, and their tributaries; of which 616 sites are in India and 416 sites are in Pakistan; of these 96 have been excavated.At its peak, the Indus Civilisation may have had a population of over five million inhabitants.The Indus Valley Civilisation (IVC), or Harappan Civilisation, was a Bronze Age civilisation (3300–1300 BCE; mature period 2600–1900 BCE) mainly in the northwestern regions of the Indian subcontinent.The Indus Valley Civilisation is also named the Harappan Civilisation after Harappa, the first of its sites to be excavated in the 1920s (mainly 1921), in what was then the Punjab province of British India.The civilisation was primarily located in modern-day India (Gujarat, Haryana, Punjab, Rajasthan, Uttar Pradesh, Jammu and Kashmir states) and Pakistan (Sindh, Punjab, and Balochistan provinces), while some sites in Afghanistan are believed to be trading colonies.The inhabitants of the ancient Indus River valley developed new techniques in handicraft (carnelian products, seal carving) and metallurgy (copper, bronze, lead, and tin)