Final answer:
The traveling judges' decisions became the basis of Common Law, which relies on precedent set by past judicial decisions to guide future cases.
Step-by-step explanation:
The decisions made by the traveling judges became the basis of Common Law. Common Law is characterized by case law or precedent, which is law developed by judges through decisions in courts as opposed to statutes from legislative processes. This judicial system emphasizes the importance of past court decisions to guide future cases. While Roman Law has also played a pivotal role in the legal systems of Europe, it was the decisions made by judges traveling on circuits in England after the Norman Conquest that led to the establishment of Common Law, which is primarily followed in the United Kingdom and the United States. Common Law contrasts with civil law systems, which are derived from Roman Law and Code of Justinian, and involve comprehensive statutes and codes as a primary means to form legal judgments.