横向
1
Advanced stage of human society
3
Formal agreement between nations
6
Government elected by the people
9
Long and distinct period of history
10
Medieval land-for-service system
纵向
2
Succession of rulers from same family
4
Handwritten historical document
5
Male monarch ruler
7
Deadly epidemic disease
8
Military conflict or fight
11
Movement of people to new areas
12
Armored warrior of medieval times
13
Person owned as property