横向
1
Union formed for mutual benefit
6
Practice of farming and growing food
8
Deadly epidemic disease
9
Person who travels to discover new lands
10
Armed conflict between nations
11
Formal agreement between nations
纵向
2
Large territory under one ruler
3
Collection of traditional stories
4
Metal that replaced bronze in tools
5
Person who buys and sells goods
7
Freedom from outside control
12
Belonging to a very old period