横向
1
Deadly epidemic disease
4
Armed conflict between nations
6
Government elected by the people
7
Person with no fixed home
8
Period of ten years
纵向
2
Large territory under one ruler
3
Advanced stage of human society
5
Military conflict or fight
Deadly epidemic disease
Armed conflict between nations
Government elected by the people
Person with no fixed home
Period of ten years
Large territory under one ruler
Advanced stage of human society
Military conflict or fight