横向
1
Government by the people
2
Exchange of goods between peoples
5
Male monarch ruler
6
Large territory under one ruler
7
Ancient Mesoamerican civilization
8
Person who travels to discover new lands
10
Union formed for mutual benefit
纵向
2
Payment made to show submission
3
Deadly epidemic disease
4
Person who buys and sells goods
9
Military blockade of a fortified place