横向
1
Long and distinct period of history
3
Medieval religious military campaign
4
Movement of people to new areas
5
Practice of farming and growing food
7
Alloy of copper and tin used in early tools
纵向
2
Union formed for mutual benefit
3
Advanced stage of human society
6
Government by the people
8
Handwritten historical document
9
Belonging to a very old period
10
Large territory under one ruler
11
Deadly epidemic disease
12
Object made by humans from the past