横向
1
Legislative assembly of a country
2
Practice of establishing foreign colonies
6
Ancient Egyptian picture writing
7
Union formed for mutual benefit
9
Ancient Mesoamerican civilization
10
Formal agreement between nations
11
Belonging to a very old period
纵向
1
Deadly epidemic disease
2
Period of one hundred years
3
Succession of rulers from same family
4
Roman arena fighter
5
Long and distinct period of history
8
Alloy of copper and tin used in early tools
12
Movement of people to new areas