Complex sentence: Murad IV was the Sultan of the Ottoman Empire from 1623 to 1640, known both for restoring the authority of the state and for the brutality of his methods.
Split into simpler sentences: Murad IV was the Sultan of the Ottoman Empire from 1623 to 1640. Between 1632-1640 he was known both for restoring the authority of the state and for the brutality of his methods.