横向
1
Period of ten years
5
Armored warrior of medieval times
6
Advanced stage of human society
7
Payment made to show submission
8
Ancient empire that conquered much of Europe
9
Person owned as property
11
Medieval land-for-service system
纵向
2
Person with no fixed home
3
Object made by humans from the past
4
Freedom from outside control
10
Person who travels to discover new lands
12
Government ruled by a king or queen
13
Person who buys and sells goods