id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-1441 Bithynia - Wikipedia .html text/html 2571 379 65 Bithynia and Pontus as a province of the Roman Empire, 125 AD Roman province Bithynia Bithynia (/bɪˈθɪniə/; Koine Greek: Βιθυνία, Bithynía) was an ancient region, kingdom and Roman province in the northwest of Asia Minor, adjoining the Sea of Marmara, the Bosporus, and the Black Sea. It bordered Mysia to the southwest, Paphlagonia to the northeast along the Pontic coast, and Phrygia to the southeast towards the interior of Asia Minor. Kingdom of Bithynia[edit] Roman province[edit] Main article: Bithynia et Pontus As a Roman province, the boundaries of Bithynia changed frequently. During this period, Bithynia was commonly united for administrative purposes with the province of Pontus. Byzantine province[edit] Under the Byzantine Empire, Bithynia was again divided into two provinces, separated by the Sangarius. Provinces of the early Roman Empire (117 AD) Late Roman and Byzantine provinces (4th–7th centuries AD) ./cache/en-wikipedia-org-1441.html ./txt/en-wikipedia-org-1441.txt