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<p>Orhan Gazi took Bursa and turned the principality into a state. The conquest of Bursa in 1326 meant the new capital. After Iznik and Izmit, it was passed to Rumelia with Çimpe Castle. The pedestrian and custom organization institutionalized the army. The first Ottoman coin and divan order became clear during this period. He took advantage of Byzantine infighting. It started urbanization with imarethane, mosques and bridges. Orhan Gazi is the ruler who turned the organization into an administration.Left an Anatolian-Rumelian biplane legacy to Murad II.</p>
