横向
1
Practice of farming and growing food
8
Large territory under one ruler
9
Deadly epidemic disease
10
Payment made to show submission
11
Period of ten years
12
Alloy of copper and tin used in early tools
纵向
2
Armed conflict between nations
3
Metal that replaced bronze in tools
4
Government ruled by a king or queen
5
Freedom from outside control
6
Medieval land-for-service system
7
Fundamental law of a nation