Across
1
Freedom from outside control
7
Ancient Mesoamerican civilization
8
Military blockade of a fortified place
9
Formal agreement between nations
10
Roman arena fighter
11
Relating to the Middle Ages
12
Period of ten years
13
Government ruled by a king or queen
14
Sudden overthrow of a government
Down
2
Uprising against authority
3
Advanced stage of human society
4
Armed entry into another territory
5
Person who travels to discover new lands
6
Union formed for mutual benefit
15
Object made by humans from the past