横向
1
Belonging to a very old period
3
Person who buys and sells goods
5
Period of ten years
6
Union formed for mutual benefit
7
Territory controlled by another country
8
Deadly epidemic disease
13
Ancient Mesoamerican civilization
纵向
2
Payment made to show submission
3
Collection of traditional stories
4
Formal agreement between nations
9
Legislative assembly of a country
10
Advanced stage of human society
11
Alloy of copper and tin used in early tools
12
Person with no fixed home