横向
1
Movement of people to new areas
6
Roman arena fighter
7
Advanced stage of human society
8
Metal that replaced bronze in tools
10
Medieval land-for-service system
12
Ancient Mesoamerican civilization
纵向
2
Ancient Egyptian ruler
3
Object made by humans from the past
4
Belonging to a very old period
5
Ancient empire that conquered much of Europe
9
Military blockade of a fortified place
11
Person with no fixed home
13
Relating to the Middle Ages