Across
1
Advanced stage of human society
7
Government elected by the people
8
Person who buys and sells goods
9
Medieval religious military campaign
Down
2
Ancient empire that conquered much of Europe
3
Long and distinct period of history
4
Uprising against authority
5
Object made by humans from the past
6
Formal agreement between nations
7
Sudden overthrow of a government
8
Ancient Mesoamerican civilization
9
Fundamental law of a nation
10
Period of ten years
11
Union formed for mutual benefit