Across
1
Territory controlled by another country
4
Union formed for mutual benefit
6
Exchange of goods between peoples
7
Military blockade of a fortified place
8
Sudden overthrow of a government
9
Government elected by the people
11
Medieval land-for-service system
Down
2
Advanced stage of human society
3
Alloy of copper and tin used in early tools
5
Ancient Egyptian stone monument
6
Formal agreement between nations
10
Medieval religious military campaign