INDIAN HISTORY

Detailed explanation-1: -Pataliputra became one of the largest cities in the world during the Mauryan Empire (c. 320-180 BCE). Megasthenes, the Greek ambassador and historian, wrote in his account that Patliputra was one of the first cities to have a highly efficient form of local self-government during the Mauryan Empire.

Detailed explanation-2: -Ur, Babylon and Harappa are urban cities found in the ancient period.

Detailed explanation-3: -The first Indian civilization began with two cities – Harappa and Mohenjo-Daro. Both Harappa and Mohenjo-Daro looked like modern, planned cities.

Detailed explanation-4: -Pataliputra (IAST: Pāṭaliputra), adjacent to modern-day Patna, was a city in ancient India, originally built by Magadha ruler Ajatashatru in 490 BCE as a small fort (Pāṭaligrāma) near the Ganges river. Udayin laid the foundation of the city of Pataliputra at the confluence of two rivers, the Son and the Ganges.