Ruling on constitutionality. Every law must pass a constitutional test. Plenty of laws have entered the books without being constitutional--if they never did, scotus wouldn't have job security--if they are challenged and found unconstitutional, that overturns them.
Answer: The answer is:
Legal system
Explanation:
codex iuris civilis is most imprtant legal code ever written, it developed under the sponsorship of Justinian.
Justinian’s committees of jurists provided two reference works containing collections of past laws and extracts of the opinions of Roman jurists.
