横向
1
Ancient Mesoamerican civilization
4
Person who travels to discover new lands
5
Male monarch ruler
6
Period of one hundred years
7
Period of ten years
11
Government elected by the people
纵向
2
Legislative body in ancient Rome
3
Object made by humans from the past
8
Roman arena fighter
9
Payment made to show submission
10
Medieval land-for-service system
12
Exchange of goods between peoples