横向
1
Movement of people to new areas
7
Payment made to show submission
8
Legislative body in ancient Rome
10
Alloy of copper and tin used in early tools
11
Exchange of goods between peoples
13
Union formed for mutual benefit
纵向
2
Person with no fixed home
3
Government elected by the people
4
Ancient Mesoamerican civilization
5
Sudden overthrow of a government
6
Territory controlled by another country
9
Ancient empire that conquered much of Europe
12
Military blockade of a fortified place
14
Armored warrior of medieval times