Across
1
Period of ten years
4
Formal agreement between nations
5
Medieval land-for-service system
6
Advanced stage of human society
7
Practice of establishing foreign colonies
8
Succession of rulers from same family
9
Exchange of goods between peoples
10
Armed entry into another territory
12
Ancient Egyptian ruler
Down
2
Military conflict or fight
3
Territory controlled by another country
4
Payment made to show submission
11
Fortified medieval residence