Across
1
Armored warrior of medieval times
4
Union formed for mutual benefit
5
Relating to the Middle Ages
10
Alloy of copper and tin used in early tools
12
Metal that replaced bronze in tools
Down
2
Military blockade of a fortified place
3
Formal agreement between nations
6
Long and distinct period of history
7
Belonging to a very old period
8
Period of one hundred years
9
Advanced stage of human society
11
Government elected by the people