横向
1
Ancient Egyptian picture writing
5
Practice of farming and growing food
6
Period of one hundred years
7
Large territory under one ruler
9
Belonging to a very old period
10
Ancient Mesoamerican civilization
纵向
2
Period of ten years
3
Government elected by the people
4
Handwritten historical document
8
Sudden overthrow of a government
11
Armed conflict between nations
12
Exchange of goods between peoples