横向
1
Military blockade of a fortified place
3
Metal that replaced bronze in tools
5
Advanced stage of human society
7
Payment made to show submission
8
Roman arena fighter
10
Legislative assembly of a country
纵向
2
Practice of establishing foreign colonies
4
Freedom from outside control
6
Belonging to a very old period
9
Armed conflict between nations
11
Military conflict or fight
12
Long and distinct period of history