Across
1
Metal that replaced bronze in tools
4
Territory controlled by another country
5
Person who travels to discover new lands
6
Fortified medieval residence
7
Legislative body in ancient Rome
Down
2
Payment made to show submission
3
Practice of establishing foreign colonies
8
Ancient empire that conquered much of Europe
9
Medieval land-for-service system
10
Person owned as property
11
Union formed for mutual benefit
12
Exchange of goods between peoples