横向
1
Government elected by the people
4
Period of ten years
7
Formal agreement between nations
10
Succession of rulers from same family
11
Ancient empire that conquered much of Europe
12
Person who travels to discover new lands
纵向
2
Belonging to a very old period
3
Government ruled by a king or queen
5
Relating to the Middle Ages
6
Alloy of copper and tin used in early tools
8
Deadly epidemic disease
9
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