横向
1
Person who travels to discover new lands
4
Advanced stage of human society
5
Ancient Mesoamerican civilization
6
Government by the people
7
Belonging to a very old period
11
Large territory under one ruler
12
Military blockade of a fortified place
纵向
2
Medieval land-for-service system
3
Union formed for mutual benefit
8
Ancient empire that conquered much of Europe
9
Uprising against authority
10
Military conflict or fight