横向
1
Formal agreement between nations
4
Long and distinct period of history
5
Fundamental law of a nation
6
Fortified medieval residence
9
Ancient empire that conquered much of Europe
12
Person who travels to discover new lands
纵向
2
Medieval religious military campaign
3
Legislative body in ancient Rome
7
Freedom from outside control
8
Practice of establishing foreign colonies
10
Military blockade of a fortified place
11
Government ruled by a king or queen
13
Deadly epidemic disease