Across
1
Long and distinct period of history
4
Alloy of copper and tin used in early tools
6
Large territory under one ruler
8
Fortified medieval residence
9
Period of ten years
10
Fundamental law of a nation
11
Ancient Egyptian stone monument
Down
2
Military blockade of a fortified place
3
Exchange of goods between peoples
5
Freedom from outside control
7
Government ruled by a king or queen