横向
1
Sudden overthrow of a government
3
Metal that replaced bronze in tools
6
Alloy of copper and tin used in early tools
7
Legislative assembly of a country
8
Practice of farming and growing food
9
Ancient Egyptian stone monument
纵向
1
Government elected by the people
2
Medieval land-for-service system
3
Freedom from outside control
4
Movement of people to new areas
5
Period of ten years