Answer:
Even though it was written in 1215, Magna Carta is an important document to the American legal system because it forms the basis of contract law.
Step-by-step explanation:
Magna Carta, which means 'The Great Charter', is one of the most important documents in history as it established the principle that everyone is subject to the law, even the king, and guarantees the rights of individuals, the right to justice and the right to a fair trial.