摘要
Bithynia is a region in the northwest of Anatolia bordered by the Black Sea (Pontus Euxeinos) to the north, the Dardanel Strait (Hellespontos) and Kocacay (Rhyndakos) to the west, and the Sakarya River (Sangarios) to the south. A point of the Asian continent extending towards Europe, Bithynia is surrounded by seas on its three sides and has a long shore. Nicomedeia, once the capital of Bithynia, is an important city due to its location. Since the gulf
Bithynia is a region in the northwest of Anatolia bordered by the Black Sea （Pontus Euxeinos） to the north, the Dardanel Strait （Hellespontos） and Kocacay （Rhyndakos） to the west, and the Sakarya River （Sangarios） to the south. A point of the Asian continent extending towards Europe, Bithynia is surrounded by seas on its three sides and has a long shore. Nicomedeia, once the capital of Bithynia, is an important city due to its location. Since the gulf is gradually narrowing, it can easily be closed and defended. There are two routes from Nicomedeia. One leads alongside the shore towards the Marmara Sea, enabling the passage to the north and south or to the European shore across the peninsula.
