横向
1
Succession of rulers from same family
5
Union formed for mutual benefit
7
Person with no fixed home
8
Period of one hundred years
11
Belonging to a very old period
12
Formal agreement between nations
纵向
2
Person who buys and sells goods
3
Exchange of goods between peoples
4
Practice of establishing foreign colonies
6
Ancient Mesoamerican civilization
8
Advanced stage of human society
9
Ancient Egyptian ruler
10
Freedom from outside control