Across
1
Formal agreement between nations
4
Movement of people to new areas
5
Sudden overthrow of a government
9
Ancient Mesoamerican civilization
11
Alloy of copper and tin used in early tools
12
Male monarch ruler
Down
2
Metal that replaced bronze in tools
3
Medieval religious military campaign
6
Armed conflict between nations
7
Uprising against authority
8
Legislative assembly of a country
9
Relating to the Middle Ages
10
Ancient empire that conquered much of Europe
13
Exchange of goods between peoples