Final answer:
Henry II is known for introducing Common Law and trial by jury, as opposed to the Magna Carta, which was later established by his son King John.
Step-by-step explanation:
Henry II became a well-known name throughout Europe primarily for the introduction of the concepts of Common Law and trial by jury. Common Law is a legal system based on court decisions and customs, rather than written statutes. It provided a unified set of laws that could be referenced across cases, creating consistency in rulings. The principle of trial by jury was part of the Assize of Clarendon, established in 1166, which laid the groundwork for a legal process where a group of the accused person's peers would determine their guilt or innocence. These reforms were significant in shaping the English legal system and have left a lasting legacy in legal systems around the world.
Specifically, option C, Trial by Jury and Assize of Clarendon, are the two new concepts introduced during Henry II's reign. Whereas the Magna Carta was signed later by his son, King John, in 1215, reinforcing the rule of law and setting precedent for other liberties and rights, including due process.