democracy
Government by the people. The word comes from Greek words meaning "people" and "power".
citizen
A member of a society with rights, such as voting.
medieval
From the Middle Ages, in Europe about 500 CE to 1500 CE.
feudal system
A way of organizing society in medieval Europe: the king gave land to nobles in return for loyalty and soldiers, and peasants worked the land.
serf
A peasant who had to stay and work on a lord's land and could not leave without permission.
knight
A soldier on horseback who served a lord.
guild
A group of skilled workers in the same craft, such as bakers or weavers, who made rules for their trade.
Magna Carta
A document from 1215 in England that said even the king had to follow the law.