1. When was the period known as the Middle Ages?
2. What did knights receive in exchange for their military service?
3. What was the feudal system primarily based on?
4. During which period did knights and castles become common?
5. What was the main purpose of medieval castles?
6. What were the Crusades primarily about?
7. When was the Magna Carta signed?
8. Which group in medieval society was bound to the land?
9. How much of Europe's population died during the Black Death?
10. How long did the medieval period last?