横向
1
Large territory under one ruler
5
Deadly epidemic disease
7
Armed entry into another territory
8
Payment made to show submission
13
Fundamental law of a nation
纵向
2
Metal that replaced bronze in tools
3
Military conflict or fight
4
Medieval land-for-service system
6
Government elected by the people
9
Practice of farming and growing food
10
Person with no fixed home
11
Fortified medieval residence
12
Belonging to a very old period