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<p>Osman Gazi is the founder of the Ottoman Empire. Willow-Domanich was the lord of the Kayi tribe in the end zone. By fighting against the Byzantine takfurs, Bilecik, Yarhisar and İnegöl took their surroundings. Independence is accepted around 1299. The policy of justice, gas and exploitation enlarged the small principality. His bond with Sheikh Edebali stands out in the legends. Osman Gazi is described as an extreme gentleman who lives simply and whose word is trusted.He left a solid core for his son Orhan. The six-century march of the Ottoman Empire started with his foundation and Gaza tradition. Its name is the symbol of the will to establish.</p>