横向
1
Medieval land-for-service system
3
Period of one hundred years
4
Person who buys and sells goods
6
Legislative body in ancient Rome
10
Roman arena fighter
11
Practice of farming and growing food
纵向
2
Government by the people
5
Union formed for mutual benefit
7
Metal that replaced bronze in tools
8
Fundamental law of a nation
9
Military blockade of a fortified place
12
Ancient empire that conquered much of Europe