Across
1
Advanced stage of human society
7
Military blockade of a fortified place
8
Ancient empire that conquered much of Europe
9
Armed conflict between nations
10
Large territory under one ruler
11
Roman arena fighter
Down
2
Deadly epidemic disease
3
Armed entry into another territory
4
Fundamental law of a nation
5
Freedom from outside control
6
Alloy of copper and tin used in early tools