横向
1
Medieval land-for-service system
4
Formal agreement between nations
6
Male monarch ruler
8
Collection of traditional stories
9
Uprising against authority
11
Military blockade of a fortified place
纵向
2
Union formed for mutual benefit
3
Exchange of goods between peoples
5
Ancient Egyptian picture writing
7
Ancient empire that conquered much of Europe
10
Ancient Mesoamerican civilization
12
Long and distinct period of history