What was the largest city in the Gupta Empire?
Pataliputra
There is no mention of Pataliputra in written sources prior to the early Jain and Buddhist texts (the Pali Canon and Āgamas), where it appears as the village of Pataligrama and is omitted from a list of major cities in the region.[12] Early Buddhist sources report a city being built in the vicinity of the village towards the end of the Buddha's life; this generally agrees with archaeological evidence showing urban development occurring in the area no earlier than the 3rd or 4th Century BCE.[12] In 303 BCE, Greek historian and ambassador Megasthenes mentioned Pataliputra as a city in his work Indika.[13]Diodorus, quoting Iambulus mention that the king of Pataliputra had a "great love for the Greeks".[14]