Across
1
Person owned as property
4
Territory controlled by another country
5
Ancient Mesoamerican civilization
8
Advanced stage of human society
10
Object made by humans from the past
12
Exchange of goods between peoples
Down
2
Armed entry into another territory
3
Period of ten years
6
Ancient Egyptian ruler
7
Union formed for mutual benefit
9
Payment made to show submission
11
Armed conflict between nations