横向
1
Exchange of goods between peoples
4
Ancient Egyptian stone monument
5
Military conflict or fight
6
Collection of traditional stories
7
Person who travels to discover new lands
8
Armed conflict between nations
纵向
1
Payment made to show submission
2
Practice of farming and growing food
3
Freedom from outside control
6
Ancient Mesoamerican civilization
9
Union formed for mutual benefit
10
Practice of establishing foreign colonies