横向
1
Advanced stage of human society
6
Armed conflict between nations
8
Legislative body in ancient Rome
9
Fundamental law of a nation
13
Union formed for mutual benefit
14
Government by the people
纵向
2
Handwritten historical document
3
Medieval land-for-service system
4
Deadly epidemic disease
5
Person with no fixed home
7
Sudden overthrow of a government
10
Territory controlled by another country
11
Long and distinct period of history
12
Person who travels to discover new lands
15
Movement of people to new areas