 The Justinian work would, starting in the 16th century, be known as "Corpus Iuris Civilis", but at the time it lacked diffusion and was known through compendiums that deformed it.The renaissance in Roman studies during the 12th and 13th centuries that would influence all of Europe, occurred in Bologna, a city in the Italian Romagna.It wasn't small, in this diffusion, the role of the romano-Germanic emperors, who were moved by their political interests as much as by their supposed condition of successors to the old Roman Empire.