横向
1
Advanced stage of human society
6
Medieval land-for-service system
8
Person who travels to discover new lands
9
Roman arena fighter
11
Object made by humans from the past
纵向
2
Government elected by the people
3
Movement of people to new areas
4
Belonging to a very old period
5
Practice of establishing foreign colonies
7
Ancient Egyptian stone monument
10
Succession of rulers from same family
12
Formal agreement between nations
13
Military blockade of a fortified place