The document summarizes the notable contributions of several medieval European monarchs, including William the Conqueror of England who conducted the Domesday Book census; Henry II of England who broadened the royal justice system and began the jury system; John of England who signed the Magna Carta limiting monarchal power; and Edward I of England who created the Model Parliament establishing the bicameral legislature. In France, Hugh Capet increased royal power and made the throne hereditary founding the Capetian Dynasty, while Philip Augustus expanded royal lands and organized a standing army and national tax. Louis IX of France centralized the monarchy through expanded royal courts and ending serfdom. Philip IV of France established the Estates General