Across
1
Armed conflict between nations
3
Ancient Egyptian stone monument
5
Ancient empire that conquered much of Europe
8
Alloy of copper and tin used in early tools
10
Long and distinct period of history
11
Object made by humans from the past
12
Union formed for mutual benefit
Down
2
Period of ten years
4
Succession of rulers from same family
6
Deadly epidemic disease
7
Movement of people to new areas
9
Medieval land-for-service system