When Charlemagne's empire fell, Europe fragmented into feudal territories. Under feudalism, the king owned all land and granted fiefs to nobles in exchange for loyalty and military service. Nobles further divided their lands between knights who protected local peasants. Peasants were tied to the land and provided food, services, and labor up the feudal chain to support their lord and the king. Through this system of obligations and bonds of loyalty, feudalism organized Medieval European society and political order.