Across
1
Metal that replaced bronze in tools
3
Relating to the Middle Ages
5
Armored warrior of medieval times
6
Medieval religious military campaign
11
Advanced stage of human society
12
Medieval land-for-service system
Down
2
Ancient empire that conquered much of Europe
4
Government elected by the people
7
Armed entry into another territory
8
Person owned as property
9
Handwritten historical document
10
Deadly epidemic disease