    Sentence 1: Who reigned over  the Ottoman empire when it  was at its most powerful.    Sentence 2: During the 16th  and 17th centuries, in}  particular at the height of its|  power under the reign of  Suleiman the Magnificent, the|  Ottoman Empire was al  powerful multinational  multilingual empire controlling  much of Southeast Europe  Western Asia, the Caucasus]  North Africa, and the Horn of|  Africa.