Across
1
Armed entry into another territory
6
Period of one hundred years
7
Ancient empire that conquered much of Europe
9
Male monarch ruler
10
Government elected by the people
11
Relating to the Middle Ages
Down
2
Formal agreement between nations
3
Advanced stage of human society
4
Object made by humans from the past
5
Alloy of copper and tin used in early tools
8
Freedom from outside control
12
Union formed for mutual benefit