The Norman conquest of England in 1066 established William the Conqueror as the new king after he defeated the Anglo-Saxon King Harold Godwinson at the Battle of Hastings. Several hundred years later, King John's oppressive rule led English nobles to force him to sign the Magna Carta in 1215, establishing certain legal rights and limiting the king's power. This document helped develop the foundations of constitutional monarchy and led to the creation of the first English parliament under King Edward I in the late 13th century.