横向
1
Union formed for mutual benefit
6
Advanced stage of human society
8
Period of ten years
9
Deadly epidemic disease
纵向
2
Fortified medieval residence
3
Succession of rulers from same family
4
Payment made to show submission
5
Uprising against authority
7
Territory controlled by another country
10
Sudden overthrow of a government
11
Ancient Mesoamerican civilization
12
Government elected by the people