What factors might have encouraged the creation of written law codes like that of king hammurabi?

Hammurabi's Code epitomized the law of retributive justice, better known as 'an eye for an eye ... The fifth king of the dynasty, Sin-Muballit (reigned 1812-1793 BCE), ... enriched the city and encouragedexpansion so that most of the cities of the south ... Sorcery, to an ancient Mesopotamian, would nothave exactly the same ...