Across
1
Formal agreement between nations
4
Union formed for mutual benefit
5
Military blockade of a fortified place
7
Practice of establishing foreign colonies
8
Belonging to a very old period
9
Movement of people to new areas
10
Government by the people
11
Medieval land-for-service system
Down
2
Government ruled by a king or queen
3
Sudden overthrow of a government
6
Medieval religious military campaign