横向
1
Territory controlled by another country
4
Alloy of copper and tin used in early tools
5
Belonging to a very old period
9
Military blockade of a fortified place
10
Period of ten years
12
Movement of people to new areas
纵向
2
Government elected by the people
3
Armed entry into another territory
6
Person with no fixed home
7
Freedom from outside control
8
Ancient Mesoamerican civilization
11
Ancient Egyptian picture writing
13
Exchange of goods between peoples