横向
1
Succession of rulers from same family
4
Metal that replaced bronze in tools
5
Armed entry into another territory
7
Ancient Egyptian stone monument
8
Long and distinct period of history
9
Government by the people
11
Uprising against authority
12
Large territory under one ruler
纵向
2
Sudden overthrow of a government
3
Formal agreement between nations
6
Person with no fixed home
8
Person who travels to discover new lands
10
Alloy of copper and tin used in early tools
13
Medieval land-for-service system