横向
1
Person who travels to discover new lands
6
Fundamental law of a nation
7
Armed conflict between nations
8
Succession of rulers from same family
9
Exchange of goods between peoples
11
Military conflict or fight
纵向
2
Payment made to show submission
3
Freedom from outside control
4
Alloy of copper and tin used in early tools
5
Union formed for mutual benefit
10
Period of one hundred years
12
Person who buys and sells goods
13
Formal agreement between nations