横向
1
Medieval land-for-service system
4
Practice of establishing foreign colonies
5
Payment made to show submission
6
Union formed for mutual benefit
9
Advanced stage of human society
11
Government ruled by a king or queen
12
Fundamental law of a nation
纵向
2
Legislative assembly of a country
3
Person owned as property
7
Period of ten years
8
Armed entry into another territory
10
Fortified medieval residence