横向
1
Advanced stage of human society
5
Deadly epidemic disease
7
Military blockade of a fortified place
9
Uprising against authority
10
Medieval religious military campaign
14
Movement of people to new areas
纵向
2
Government elected by the people
3
Government ruled by a king or queen
4
Person who travels to discover new lands
6
Alloy of copper and tin used in early tools
8
Succession of rulers from same family
11
Large territory under one ruler
12
Practice of establishing foreign colonies
13
Formal agreement between nations