Prusa began minting its first autonomous metallic currencies as of the mid-first century BC. The Prusa Plain
at the base of Mount Olympus in the interior of Bithynia was a fertile agricultural region. The principal products
cultivated were crops and fruits, although viticulture and cattle breeding were also important. Merchants in the
city traded crops for ore and timber[6], the latter being obtained from the slopes of Olympus (Uludag) itself.
It is understood from the letters of Pliny the Younger, whom the Emperor Trajan appointed as governor to the
Province of Bithynia, that Prusa was a well-developed city at the beginning of the second century AD and that it
was adorned with numerous new structures during that period. The city of Prusa was looted by the Goths in the
year 258 AD and was unable to regain its previous prominence until the Byzantine period. No important event
related to Prusa is said to have occurred within the general history of Anatolia during the Medieval Period.