横向
1
Metal that replaced bronze in tools
4
Movement of people to new areas
5
Territory controlled by another country
6
Person who buys and sells goods
7
Legislative body in ancient Rome
9
Medieval land-for-service system
11
Legislative assembly of a country
纵向
2
Freedom from outside control
3
Person who travels to discover new lands
8
Armored warrior of medieval times
10
Advanced stage of human society
12
Ancient Egyptian picture writing