横向
1
Union formed for mutual benefit
6
Formal agreement between nations
9
Military conflict or fight
10
Ancient empire that conquered much of Europe
纵向
2
Large territory under one ruler
3
Metal that replaced bronze in tools
4
Person with no fixed home
5
Military blockade of a fortified place
7
Uprising against authority
8
Movement of people to new areas
11
Alloy of copper and tin used in early tools