横向
1
Ancient Mesoamerican civilization
3
Payment made to show submission
6
Large territory under one ruler
7
Person who travels to discover new lands
11
Belonging to a very old period
12
Armed conflict between nations
纵向
2
Government by the people
4
Legislative assembly of a country
5
Ancient Egyptian ruler
8
Deadly epidemic disease
9
Person with no fixed home
10
Freedom from outside control
13
Practice of establishing foreign colonies