Across
1
Military blockade of a fortified place
4
Freedom from outside control
6
Union formed for mutual benefit
7
Person who travels to discover new lands
9
Object made by humans from the past
Down
2
Alloy of copper and tin used in early tools
3
Government elected by the people
5
Fortified medieval residence
8
Belonging to a very old period
10
Formal agreement between nations
11
Payment made to show submission
12
Exchange of goods between peoples
13
Period of ten years
14
Legislative body in ancient Rome