横向
1
Long and distinct period of history
3
Person who travels to discover new lands
6
Government ruled by a king or queen
8
Armored warrior of medieval times
10
Formal agreement between nations
11
Roman arena fighter
纵向
2
Medieval land-for-service system
4
Deadly epidemic disease
5
Metal that replaced bronze in tools
6
Movement of people to new areas
7
Medieval religious military campaign
9
Government elected by the people