Across
1
Government elected by the people
4
Formal agreement between nations
5
Alloy of copper and tin used in early tools
7
Person who travels to discover new lands
11
Practice of farming and growing food
12
Metal that replaced bronze in tools
Down
2
Period of ten years
3
Person owned as property
6
Fundamental law of a nation
8
Ancient Egyptian ruler
9
Payment made to show submission
10
Exchange of goods between peoples