横向
1
Formal agreement between nations
2
Union formed for mutual benefit
5
Payment made to show submission
6
Military blockade of a fortified place
9
Belonging to a very old period
10
Medieval land-for-service system
12
Male monarch ruler
纵向
2
Practice of farming and growing food
3
Freedom from outside control
4
Collection of traditional stories
7
Succession of rulers from same family
8
Advanced stage of human society
11
Person who travels to discover new lands