Across
1
Period of ten years
4
Advanced stage of human society
9
Formal agreement between nations
11
Deadly epidemic disease
Down
2
Military blockade of a fortified place
3
Belonging to a very old period
5
Government elected by the people
6
Government by the people
7
Ancient Egyptian ruler
8
Large territory under one ruler
10
Metal that replaced bronze in tools
12
Person with no fixed home