Across
1
Ancient Mesoamerican civilization
3
Metal that replaced bronze in tools
5
Large territory under one ruler
6
Government elected by the people
11
Ancient Egyptian stone monument
12
Succession of rulers from same family
Down
2
Ancient empire that conquered much of Europe
4
Armed conflict between nations
7
Formal agreement between nations
8
Armored warrior of medieval times
9
Person who buys and sells goods
10
Long and distinct period of history