Answer: These two economy's were very similar yet different. Both were ways of making a living. The manor economy was self sufficient and made everything themselves. Peasants produced almost everything they needed from food to clothing. The commercial economy slowly reshaped medieval society. King John and the Magna Carta. In 1215, King John of England was forced to sign the Magna Carta stating that the king was not above the law of the land and protecting the rights of the people. Today, the Magna Carta is considered one of the most important documents in the history of democracy.