横向
1
Exchange of goods between peoples
2
Ancient Mesoamerican civilization
6
Ancient Egyptian ruler
7
Armed conflict between nations
8
Male monarch ruler
9
Metal that replaced bronze in tools
10
Ancient empire that conquered much of Europe
11
Object made by humans from the past
纵向
2
Movement of people to new areas
3
Legislative assembly of a country
4
Person who travels to discover new lands
5
Person with no fixed home
12
Armored warrior of medieval times