Osman I, a leader of the Turkish tribes in Anatolia, founded the Ottoman Empire around 1299. The term “Ottoman” is derived from Osman's name, which was “Uthman” in Arabic. The Ottoman Turks set up a formal government and expanded their territory under the leadership of Osman I, Orhan, Murad I and Bayezid I.
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<em>if they were building the strong fortress on top of the high hill, they could see their enemy coming from far away.</em>
3) the Revolutionary War in America
A. Persia. Persia was acquired after Prophet Muhammad's death. Hope my answer was useful.