横向
1
Fortified medieval residence
4
Ancient empire that conquered much of Europe
5
Medieval land-for-service system
6
Payment made to show submission
7
Metal that replaced bronze in tools
8
Armored warrior of medieval times
9
Ancient Mesoamerican civilization
10
Person who buys and sells goods
纵向
2
Fundamental law of a nation
3
Object made by humans from the past
4
Sudden overthrow of a government
8
Male monarch ruler
11
Period of ten years