横向
1
Freedom from outside control
8
Deadly epidemic disease
9
Metal that replaced bronze in tools
10
Movement of people to new areas
11
Period of one hundred years
12
Military blockade of a fortified place
13
Ancient empire that conquered much of Europe
纵向
2
Large territory under one ruler
3
Ancient Egyptian stone monument
4
Legislative assembly of a country
5
Practice of farming and growing food
6
Alloy of copper and tin used in early tools
7
Long and distinct period of history