横向
1
Medieval land-for-service system
4
Military conflict or fight
5
Government by the people
11
Object made by humans from the past
12
Alloy of copper and tin used in early tools
13
Medieval religious military campaign
纵向
2
Formal agreement between nations
3
Ancient Mesoamerican civilization
6
Payment made to show submission
7
Ancient Egyptian stone monument
8
Government elected by the people
9
Ancient Egyptian ruler
10
Exchange of goods between peoples