横向
1
Payment made to show submission
5
Succession of rulers from same family
6
Collection of traditional stories
7
Government elected by the people
10
Ancient empire that conquered much of Europe
12
Practice of establishing foreign colonies
纵向
2
Person who travels to discover new lands
3
Exchange of goods between peoples
4
Legislative body in ancient Rome
6
Ancient Mesoamerican civilization
8
Person who buys and sells goods
9
Fundamental law of a nation
11
Medieval land-for-service system