横向
1
Metal that replaced bronze in tools
4
Ancient Egyptian ruler
6
Military blockade of a fortified place
8
Period of ten years
9
Long and distinct period of history
10
Exchange of goods between peoples
11
Succession of rulers from same family
纵向
2
Movement of people to new areas
3
Period of one hundred years
5
Union formed for mutual benefit
7
Handwritten historical document