横向
1
Advanced stage of human society
8
Ancient empire that conquered much of Europe
9
Metal that replaced bronze in tools
10
Sudden overthrow of a government
纵向
2
Deadly epidemic disease
3
Belonging to a very old period
4
Person owned as property
5
Large territory under one ruler
6
Alloy of copper and tin used in early tools
7
Territory controlled by another country
11
Male monarch ruler