Across
1
Union formed for mutual benefit
4
Metal that replaced bronze in tools
7
Formal agreement between nations
10
Belonging to a very old period
12
Ancient Egyptian stone monument
Down
2
Succession of rulers from same family
3
Medieval religious military campaign
5
Alloy of copper and tin used in early tools
6
Territory controlled by another country
8
Movement of people to new areas
9
Legislative body in ancient Rome
11
Armed conflict between nations