Across
1
Formal agreement between nations
3
Person owned as property
5
Sudden overthrow of a government
7
Roman arena fighter
8
Alloy of copper and tin used in early tools
11
Fortified medieval residence
12
Armed conflict between nations
Down
2
Medieval land-for-service system
4
Legislative assembly of a country
6
Relating to the Middle Ages
9
Territory controlled by another country
10
Advanced stage of human society