Europeans knew Suleyman as Suleyman the magnificent

Explanation:

The Europeans called him "The Magnificent," but the Ottomans called him Kanuni, or "The Lawgiver." The Suleymanie Mosque, built for Suleyman, describes Suleyman in its inscription as Nashiru kawanin al-Sultaniyye, or "Propagator of the Sultanic Laws."

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The Europeans nicknamed him the "Magnificent", but his own people called him "Kanuni", which means "lawgiver." He considered himself the second Caliph of the Ottoman Caliphate of Islam. As Caliph, he offered military protection to any Muslim country that was invaded by outside forces..

Explanation:

the answer should be monarchy