横向
1
Advanced stage of human society
7
Ancient Egyptian stone monument
9
Ancient Mesoamerican civilization
10
Exchange of goods between peoples
纵向
2
Government by the people
3
Practice of establishing foreign colonies
4
Payment made to show submission
5
Union formed for mutual benefit
6
Person who travels to discover new lands
8
Armored warrior of medieval times
11
Movement of people to new areas