Across
1
Long and distinct period of history
4
Medieval land-for-service system
5
Ancient Egyptian stone monument
7
Alloy of copper and tin used in early tools
9
Belonging to a very old period
10
Advanced stage of human society
11
Roman arena fighter
12
Government elected by the people
Down
2
Person owned as property
3
Ancient Mesoamerican civilization
6
Legislative assembly of a country
8
Armed entry into another territory
13
Armed conflict between nations