Across
1
Practice of establishing foreign colonies
4
Exchange of goods between peoples
9
Metal that replaced bronze in tools
10
Long and distinct period of history
11
Alloy of copper and tin used in early tools
12
Government ruled by a king or queen
13
Person with no fixed home
Down
2
Ancient empire that conquered much of Europe
3
Fortified medieval residence
5
Ancient Egyptian picture writing
6
Military blockade of a fortified place
7
Collection of traditional stories
8
Movement of people to new areas