Across
1
Ancient Egyptian stone monument
4
Alloy of copper and tin used in early tools
5
Person who travels to discover new lands
7
Large territory under one ruler
8
Object made by humans from the past
12
Armored warrior of medieval times
Down
2
Legislative body in ancient Rome
3
Sudden overthrow of a government
6
Ancient Egyptian picture writing
9
Exchange of goods between peoples
10
Movement of people to new areas
11
Formal agreement between nations