Across
1
Armed conflict between nations
3
Freedom from outside control
4
Movement of people to new areas
5
Legislative assembly of a country
6
Government elected by the people
8
Alloy of copper and tin used in early tools
15
Fundamental law of a nation
Down
2
Advanced stage of human society
7
Roman arena fighter
9
Military blockade of a fortified place
10
Union formed for mutual benefit
11
Object made by humans from the past
12
Long and distinct period of history
13
Metal that replaced bronze in tools
14
Period of ten years