Across
1
Metal that replaced bronze in tools
4
Relating to the Middle Ages
5
Formal agreement between nations
6
Person who travels to discover new lands
9
Medieval religious military campaign
10
Practice of farming and growing food
11
Person owned as property
12
Large territory under one ruler
Down
2
Belonging to a very old period
3
Handwritten historical document
7
Government by the people
8
Armed entry into another territory
13
Freedom from outside control