横向
1
Armed entry into another territory
3
Ancient Mesoamerican civilization
5
Military blockade of a fortified place
6
Person owned as property
7
Military conflict or fight
8
Government by the people
9
Government elected by the people
11
Long and distinct period of history
纵向
2
Advanced stage of human society
3
Person who buys and sells goods
4
Union formed for mutual benefit
10
Exchange of goods between peoples
12
Fortified medieval residence
13
Freedom from outside control