横向
1
Exchange of goods between peoples
5
Payment made to show submission
6
Succession of rulers from same family
7
Government ruled by a king or queen
8
Government by the people
9
Fortified medieval residence
纵向
2
Medieval land-for-service system
3
Belonging to a very old period
4
Military blockade of a fortified place
7
Handwritten historical document
10
Uprising against authority
11
Object made by humans from the past