Across
1
Ancient Egyptian picture writing
5
Long and distinct period of history
6
Union formed for mutual benefit
8
Armed entry into another territory
10
Metal that replaced bronze in tools
Down
2
Fundamental law of a nation
3
Alloy of copper and tin used in early tools
4
Ancient Mesoamerican civilization
7
Person owned as property
9
Armed conflict between nations
11
Advanced stage of human society