横向
1
Medieval land-for-service system
4
Deadly epidemic disease
5
Military blockade of a fortified place
6
Union formed for mutual benefit
7
Government elected by the people
8
Government ruled by a king or queen
10
Exchange of goods between peoples
纵向
2
Fundamental law of a nation
3
Legislative assembly of a country
9
Ancient Egyptian stone monument
11
Long and distinct period of history
12
Period of ten years