Across
1
Person owned as property
4
Male monarch ruler
5
Advanced stage of human society
6
Ancient Mesoamerican civilization
8
Union formed for mutual benefit
12
Exchange of goods between peoples
Down
2
Formal agreement between nations
3
Large territory under one ruler
7
Handwritten historical document
9
Armed entry into another territory
10
Ancient Egyptian stone monument
11
Medieval land-for-service system