| A | B |
| Purgatory | A place the Catholic Church believed you were sent while your sins were clensed |
| Schism | Division of the church |
| Excommunication | Kicked out of the Church |
| Lords | High ranking people located below the king in the feudal system |
| Hundred Years War | War fought between France and England |
| Vassals | Lesser lords |
| Serfs | Most peasants were these |
| Castles | Built for protection during the middle ages |
| Longships | Ships used by the Vikings on their raids |
| Vikings | These ruthless raiders were also traders and explorers |
| Black Death | Spread throughout western Europe killing between 25 to 50 percent of the population |
| Magna Carta | Document which limited the power of the king |
| Crusade | A Christian holy war |
| Great Council | Nobles who served as advisors to the king. Eventually evolved into Parliament |
| Joan of Arc | French military leader during the Hundred Years War. Claimed to hear voices from God |
| Monarch | A ruler such as an emperor, king or queen |
| Pope Urban II | Called for a crusade to remove the Muslim invaders from the Holy Land |
| Feudalism | A system in which the king divides his land and power in exchange for protection |
| Knights | Armored horsemen |
| Heresy | Teachings that go against the Church |