横向
1
Metal that replaced bronze in tools
3
Movement of people to new areas
4
Territory controlled by another country
5
Person who travels to discover new lands
6
Succession of rulers from same family
7
Formal agreement between nations
10
Period of one hundred years
纵向
2
Union formed for mutual benefit
3
Handwritten historical document
8
Deadly epidemic disease
9
Practice of farming and growing food
11
Legislative assembly of a country
12
Ancient Egyptian stone monument
13
Period of ten years