横向
1
Exchange of goods between peoples
5
Large territory under one ruler
6
Alloy of copper and tin used in early tools
7
Ancient Egyptian picture writing
8
Advanced stage of human society
9
Military conflict or fight
11
Metal that replaced bronze in tools
纵向
2
Relating to the Middle Ages
3
Handwritten historical document
4
Sudden overthrow of a government
10
Freedom from outside control
12
Person who buys and sells goods