横向
1
Large territory under one ruler
6
Medieval land-for-service system
7
Period of ten years
8
Roman arena fighter
10
Movement of people to new areas
11
Belonging to a very old period
12
Formal agreement between nations
纵向
2
Ancient Mesoamerican civilization
3
Male monarch ruler
4
Legislative assembly of a country
5
Fortified medieval residence
9
Ancient Egyptian picture writing
13
Period of one hundred years