Across
1
Government elected by the people
4
Belonging to a very old period
5
Ancient Egyptian stone monument
6
Medieval land-for-service system
7
Alloy of copper and tin used in early tools
9
Government by the people
12
Period of one hundred years
14
Relating to the Middle Ages
15
Armed entry into another territory
Down
2
Freedom from outside control
3
Period of ten years
8
Ancient Mesoamerican civilization
10
Government ruled by a king or queen
11
Ancient empire that conquered much of Europe
13
Armored warrior of medieval times