Across
1
Practice of establishing foreign colonies
7
Period of one hundred years
9
Formal agreement between nations
10
Metal that replaced bronze in tools
11
Ancient empire that conquered much of Europe
12
Fundamental law of a nation
Down
2
Armed conflict between nations
3
Payment made to show submission
4
Object made by humans from the past
5
Ancient Egyptian stone monument
6
Belonging to a very old period
8
Territory controlled by another country