WORLD CIVILIZATION

Detailed explanation-1: -Bhirrana or Birhana is the oldest Indus Valley Civilization site, dating back to 7570-6200 BCE. The excavation has yielded a three-fold cultural sequence known as Pre-Early Harappan, Early Harappan and Mature Harappan period. Hakra ware culture was seen during excavation season for the first time at this site.

Detailed explanation-2: -Bhirrana, also Bhirdana and Birhana, (Hindi: ; IAST: Bhirḍāna) is an archaeological site, located in a small village in Fatehabad District, in the Indian state of Haryana.

Detailed explanation-3: -"The C 14 dates of excavations at Bhirrana readily agree with the accepted chronology of the Harappan civilization starting from Pre-Harappan to Mature Harappan. But for the first time, on the basis of radio-metric dates from Bhirrana, the cultural remains go back to the time bracket of 7300 BC, ‘’ said the report.

Detailed explanation-4: -The earliest recognisably Harappan sites date to 3500 BC. This early phase lasts till around 2600 BC. We then enter the Mature phase from 2600 BC to 2000 BC. This is when the great cities were at their height.