横向
1
Practice of establishing foreign colonies
4
Freedom from outside control
5
Territory controlled by another country
7
Advanced stage of human society
9
Deadly epidemic disease
12
Person with no fixed home
纵向
2
Handwritten historical document
3
Metal that replaced bronze in tools
6
Sudden overthrow of a government
8
Exchange of goods between peoples
10
Formal agreement between nations
11
Armed conflict between nations
13
Relating to the Middle Ages
14
Fundamental law of a nation
15
Military blockade of a fortified place