横向
1
Medieval land-for-service system
3
Alloy of copper and tin used in early tools
5
Metal that replaced bronze in tools
6
Roman arena fighter
7
Belonging to a very old period
9
Military blockade of a fortified place
10
Payment made to show submission
纵向
2
Union formed for mutual benefit
4
Legislative assembly of a country
8
Long and distinct period of history