Across
1
Long and distinct period of history
4
Metal that replaced bronze in tools
5
Government by the people
6
Medieval religious military campaign
9
Alloy of copper and tin used in early tools
10
Military blockade of a fortified place
11
Legislative body in ancient Rome
Down
2
Exchange of goods between peoples
3
Relating to the Middle Ages
7
Period of ten years
8
Union formed for mutual benefit
12
Succession of rulers from same family