横向
1
Ancient empire that conquered much of Europe
5
Alloy of copper and tin used in early tools
7
Deadly epidemic disease
8
Object made by humans from the past
9
Medieval religious military campaign
纵向
2
Exchange of goods between peoples
3
Government ruled by a king or queen
4
Military conflict or fight
6
Person who travels to discover new lands
10
Medieval land-for-service system
11
Freedom from outside control
12
Government elected by the people