横向
1
Male monarch ruler
3
Exchange of goods between peoples
5
Government elected by the people
7
Armed entry into another territory
9
Metal that replaced bronze in tools
10
Collection of traditional stories
11
Person owned as property
纵向
2
Military blockade of a fortified place
3
Formal agreement between nations
4
Movement of people to new areas
6
Advanced stage of human society
8
Union formed for mutual benefit