Also question is, what was Suleiman's nickname?
Suleiman ISuleiman the Lawgiver
Also, what did Suleiman build in Constantinople? Süleymaniye Mosque
Also asked, what is the meaning of Suleiman?
man of peace
Why was Suleiman known as the law giver?
Known in English as "the Magnificent" because of the splendors of his court, he is usually known in Turkish as kanuni, or "law-giver," because he issued a set of laws that harmonized traditional Islamic and Ottoman legal codes.