Across
1
Advanced stage of human society
2
Long and distinct period of history
7
Legislative assembly of a country
8
Object made by humans from the past
9
Period of ten years
10
Ancient empire that conquered much of Europe
Down
2
Large territory under one ruler
3
Alloy of copper and tin used in early tools
4
Period of one hundred years
5
Armed conflict between nations
6
Fundamental law of a nation