Across
1
Period of ten years
4
Metal that replaced bronze in tools
6
Government ruled by a king or queen
8
Ancient Mesoamerican civilization
9
Government elected by the people
10
Exchange of goods between peoples
12
Legislative assembly of a country
Down
2
Advanced stage of human society
3
Deadly epidemic disease
5
Medieval land-for-service system
7
Fortified medieval residence
8
Handwritten historical document
11
Ancient Egyptian picture writing
13
Military conflict or fight