横向
1
Exchange of goods between peoples
4
Military blockade of a fortified place
5
Territory controlled by another country
6
Ancient empire that conquered much of Europe
7
Payment made to show submission
纵向
2
Advanced stage of human society
3
Uprising against authority
8
Medieval land-for-service system
9
Medieval religious military campaign
10
Formal agreement between nations
11
Sudden overthrow of a government