Across
1
Armored warrior of medieval times
4
Formal agreement between nations
5
Person who travels to discover new lands
7
Government elected by the people
8
Person who buys and sells goods
9
Movement of people to new areas
Down
2
Sudden overthrow of a government
3
Exchange of goods between peoples
6
Metal that replaced bronze in tools
7
Uprising against authority
10
Advanced stage of human society
11
Person with no fixed home
12
Payment made to show submission