Across
1
Military blockade of a fortified place
5
Person who travels to discover new lands
6
Alloy of copper and tin used in early tools
7
Freedom from outside control
8
Movement of people to new areas
10
Uprising against authority
11
Payment made to show submission
Down
2
Practice of establishing foreign colonies
3
Government elected by the people
4
Fortified medieval residence
5
Long and distinct period of history
7
Metal that replaced bronze in tools
9
Period of ten years
12
Male monarch ruler