横向
1
Metal that replaced bronze in tools
3
Ancient Mesoamerican civilization
4
Person who buys and sells goods
5
Sudden overthrow of a government
6
Legislative body in ancient Rome
7
Government elected by the people
9
Practice of farming and growing food
10
Armed conflict between nations
纵向
2
Large territory under one ruler
4
Collection of traditional stories
8
Medieval religious military campaign
11
Alloy of copper and tin used in early tools