Across
1
Person who travels to discover new lands
4
Armed entry into another territory
6
Ancient Egyptian ruler
7
Government by the people
8
Exchange of goods between peoples
9
Advanced stage of human society
11
Metal that replaced bronze in tools
15
Roman arena fighter
Down
2
Military conflict or fight
3
Practice of establishing foreign colonies
5
Fortified medieval residence
10
Ancient Egyptian picture writing
12
Government elected by the people
13
Handwritten historical document
14
Ancient empire that conquered much of Europe
