Roman law is the political legacy of the Romans left to future generations. After the law was the world's first Law of Twelve Tables, which was announced in the year 450 BC. This law looks a strict and severe penalties. When the Roman Empire expanded The trade with the territories. Which have specific laws and customs Romans gathered to see this legislation to improve the original law. The law suits against the empire that includes several groups. This law, known as jus gentium, which refers to the law of God in the late Imperial Roman has had to settle for a codified through the documents. The law is widely known Justinian laws.