Across
1
Fundamental law of a nation
4
Union formed for mutual benefit
8
Large territory under one ruler
9
Ancient empire that conquered much of Europe
10
Metal that replaced bronze in tools
Down
2
Military blockade of a fortified place
3
Movement of people to new areas
4
Object made by humans from the past
5
Formal agreement between nations
6
Male monarch ruler
7
Practice of establishing foreign colonies