 Clauses 39 and 40 demanded due process be applied in the royal justice system, while clause 45 required that the King appoint knowledgeable royal officials to the relevant roles.Although these clauses did not have any special significance in the original charter, this part of Magna Carta became singled out as particularly important in later centuries.In the United States, for example, the Supreme Court of California interpreted clause 45 in 1974 as establishing a requirement in common law that a defendant faced with the potential of incarceration be entitled to a trial overseen by a legally trained judge.