横向
1
Exchange of goods between peoples
5
Long and distinct period of history
6
Ancient Egyptian picture writing
7
Movement of people to new areas
8
Roman arena fighter
9
Fortified medieval residence
纵向
2
Medieval land-for-service system
3
Person who travels to discover new lands
4
Fundamental law of a nation
10
Sudden overthrow of a government
11
Period of one hundred years
12
Practice of establishing foreign colonies
13
Period of ten years
14
Military blockade of a fortified place