Mysia was an ancient region located in the northwest part of Asia Minor, which is modern-day Turkey. It was bordered by the Aegean Sea to the west and the Bithynia region to the north. The area was known for its diverse geography, including mountains and fertile plains, and it played a significant role in various historical events, particularly during the Hellenistic and Roman periods. The inhabitants of Mysia were known as Mysians, and the region was home to several important cities, including Pergamon and Smyrna. Mysia was also notable for its cultural exchanges, as it was influenced by neighboring civilizations such as the Greeks and Phrygians. The region's strategic location made it a crossroads for trade and military activities throughout history.