Oman History. The Politics, The, Society, Government, Economy, Religion, Travel Guide. According to archaeologists, warfare was a common activity 5,000 years ago among the peoples of the area of the Middle East that in modern times became Iran, Iraq, Saudi Arabia, and the smaller gulf states. Intermittent hostilities, often based on rivalries between the Persians of the eastern coast of the gulf and the Arabs of the western coast, have occurred ever since. Sargon, Hammurabi, Nebuchadnezzar II, and Alexander the Great were among the best known kings who led warring armies in the 2,500 years before the birth of Christ. During the centuries of Greek and Roman domination, the gulf region was of limited interest to the major powers, but the area's importance as a strategic and trading center rose with the emergence of Islam in the seventh century . The caliphate's military strength was concentrated at Hormuz. Strategically sited at the mouth of the gulf, its authority extended over ports and islands of the Arabian Sea and the Persian Gulf