Across
1
Payment made to show submission
4
Metal that replaced bronze in tools
5
Alloy of copper and tin used in early tools
6
Person owned as property
7
Person who buys and sells goods
8
Movement of people to new areas
9
Military conflict or fight
Down
1
Formal agreement between nations
2
Practice of establishing foreign colonies
3
Period of ten years
10
Period of one hundred years
11
Large territory under one ruler
12
Freedom from outside control