Across
1
Person who travels to discover new lands
6
Military conflict or fight
7
Large territory under one ruler
8
Armored warrior of medieval times
9
Belonging to a very old period
10
Ancient Mesoamerican civilization
Down
2
Formal agreement between nations
3
Ancient Egyptian stone monument
4
Metal that replaced bronze in tools
5
Government by the people
11
Advanced stage of human society
12
Armed entry into another territory
13
Alloy of copper and tin used in early tools