横向
1
Medieval land-for-service system
4
Fundamental law of a nation
7
Person owned as property
8
Relating to the Middle Ages
9
Government ruled by a king or queen
纵向
2
Person who buys and sells goods
3
Legislative body in ancient Rome
5
Payment made to show submission
6
Advanced stage of human society
9
Ancient Mesoamerican civilization
10
Practice of farming and growing food