Why was Justinian's Code created? Why was it important?

The Justinian Code was created in order to create one single set of laws for all of the Byzantine Empire. This code was extremely important because it served as the basis for everyday actions within the empire including marriage, criminal justice, slavery, and property rights. Along with this, the code ended up serving as the basis for the laws of the Byzantine Empire for the next 900 years. Countries all over world use ideas from Justinian Code's in order to form a comprehensive set of laws. The four sections of the code are the Codex Constitutionum, Digesta, Institutiones, and the Novella Constitutiones Post Codicem.