Across
1
Union formed for mutual benefit
3
Formal agreement between nations
7
Movement of people to new areas
8
Freedom from outside control
9
Person who buys and sells goods
10
Large territory under one ruler
11
Legislative assembly of a country
Down
2
Metal that replaced bronze in tools
3
Exchange of goods between peoples
4
Fortified medieval residence
5
Period of ten years
6
Object made by humans from the past