Across
1
Ancient empire that conquered much of Europe
4
Freedom from outside control
5
Exchange of goods between peoples
6
Payment made to show submission
10
Long and distinct period of history
12
Territory controlled by another country
Down
2
Deadly epidemic disease
3
Ancient Egyptian stone monument
7
Belonging to a very old period
8
Government elected by the people
9
Metal that replaced bronze in tools
11
Period of ten years