Across
1
Period of ten years
5
Object made by humans from the past
6
Union formed for mutual benefit
12
Metal that replaced bronze in tools
Down
2
Military blockade of a fortified place
3
Ancient Mesoamerican civilization
4
Government elected by the people
7
Sudden overthrow of a government
8
Practice of establishing foreign colonies
9
Armed conflict between nations
10
Exchange of goods between peoples
11
Male monarch ruler