横向
1
Succession of rulers from same family
5
Fortified medieval residence
6
Ancient empire that conquered much of Europe
7
Male monarch ruler
8
Formal agreement between nations
10
Person with no fixed home
11
Military blockade of a fortified place
纵向
2
Freedom from outside control
3
Government by the people
4
Roman arena fighter
9
Advanced stage of human society
12
Ancient Mesoamerican civilization
13
Deadly epidemic disease