横向
1
Metal that replaced bronze in tools
2
Armed entry into another territory
4
Long and distinct period of history
5
Person owned as property
6
Period of one hundred years
9
Formal agreement between nations
10
Practice of establishing foreign colonies
11
Government by the people
纵向
2
Freedom from outside control
3
Ancient empire that conquered much of Europe
7
Fundamental law of a nation
8
Male monarch ruler