Across
1
Metal that replaced bronze in tools
4
Payment made to show submission
5
Large territory under one ruler
6
Ancient Egyptian ruler
7
Practice of establishing foreign colonies
8
Formal agreement between nations
11
Belonging to a very old period
12
Ancient Egyptian picture writing
Down
2
Legislative assembly of a country
3
Advanced stage of human society
9
Medieval religious military campaign
10
Exchange of goods between peoples