In 1215, England was beset by foreign crises and cornered by a growing domestic rebellion. King John reluctantly agreed to fix his seal to a document that would change the course of history. At the time of its creation, the Magna Carta was just a peace treaty drafted by a group of rebel barons who were tired of the king's high taxes, arbitrary justice, and endless foreign wars. The fragile peace it established would last only two months, but its principles have reverberated over the centuries. This narrative follows the story of the Magna Carta's creation, its failure, and the war that subsequently engulfed England, and charts the high points in its unexpected afterlife: it protected the church, banned unlawful imprisonment, and set limits to the exercise of royal power. It established the principle that taxation must be tied to representation and paved the way for the creation of parliament. Our Declaration of Independence was formulated after the Magna Carta.