How did the magna carta gradually change legal ideas in england

Prior to the implementation of Magna Carta, every word the King said was the law. He was the highest official and needed no approval from anyone. When Magna Carta was implemented, every law the King would say would have to be approved by the Barons. 

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.