横向
1
Exchange of goods between peoples
4
Metal that replaced bronze in tools
5
Object made by humans from the past
6
Succession of rulers from same family
7
Person with no fixed home
9
Military blockade of a fortified place
10
Ancient Egyptian ruler
纵向
2
Roman arena fighter
3
Movement of people to new areas
8
Belonging to a very old period
11
Military conflict or fight