横向
1
Military blockade of a fortified place
4
Practice of farming and growing food
7
Government elected by the people
8
Long and distinct period of history
9
Freedom from outside control
纵向
2
Movement of people to new areas
3
Deadly epidemic disease
5
Medieval land-for-service system
6
Period of ten years
10
Object made by humans from the past
11
Period of one hundred years
12
Belonging to a very old period