Across
1
Medieval land-for-service system
3
Metal that replaced bronze in tools
4
Ancient empire that conquered much of Europe
5
Person who buys and sells goods
6
Period of ten years
7
Armed entry into another territory
9
Alloy of copper and tin used in early tools
10
Government ruled by a king or queen
12
Object made by humans from the past
13
Large territory under one ruler
Down
2
Union formed for mutual benefit
3
Freedom from outside control
8
Roman arena fighter
11
Period of one hundred years
14
Medieval religious military campaign