Across
1
Person owned as property
3
Succession of rulers from same family
6
Ancient empire that conquered much of Europe
7
Legislative assembly of a country
9
Fortified medieval residence
10
Exchange of goods between peoples
Down
2
Relating to the Middle Ages
4
Government by the people
5
Union formed for mutual benefit
8
Armed entry into another territory
11
Formal agreement between nations
12
Armed conflict between nations
13
Period of ten years
14
Advanced stage of human society