横向
1
Deadly epidemic disease
4
Roman arena fighter
9
Payment made to show submission
10
Metal that replaced bronze in tools
11
Armed conflict between nations
12
Ancient empire that conquered much of Europe
纵向
2
Ancient Mesoamerican civilization
3
Belonging to a very old period
5
Sudden overthrow of a government
6
Uprising against authority
7
Military blockade of a fortified place
8
Practice of establishing foreign colonies