Across
1
Medieval religious military campaign
4
Practice of establishing foreign colonies
8
Metal that replaced bronze in tools
10
Roman arena fighter
11
Armed entry into another territory
13
Person who buys and sells goods
14
Alloy of copper and tin used in early tools
Down
2
Military blockade of a fortified place
3
Belonging to a very old period
5
Sudden overthrow of a government
6
Government ruled by a king or queen
7
Freedom from outside control
9
Medieval land-for-service system
12
Ancient Mesoamerican civilization