Across
1
Advanced stage of human society
5
Formal agreement between nations
8
Period of ten years
10
Practice of establishing foreign colonies
11
Armed entry into another territory
Down
1
Period of one hundred years
2
Armed conflict between nations
3
Movement of people to new areas
4
Roman arena fighter
6
Ancient empire that conquered much of Europe
7
Medieval religious military campaign
9
Ancient Mesoamerican civilization