横向
1
Formal agreement between nations
3
Long and distinct period of history
6
Person with no fixed home
7
Collection of traditional stories
8
Fortified medieval residence
9
Government elected by the people
10
Large territory under one ruler
纵向
1
Exchange of goods between peoples
2
Government by the people
4
Belonging to a very old period
5
Medieval land-for-service system
11
Ancient empire that conquered much of Europe
12
Freedom from outside control