横向
1
Formal agreement between nations
2
Military blockade of a fortified place
5
Metal that replaced bronze in tools
10
Person with no fixed home
纵向
2
Person owned as property
3
Ancient Mesoamerican civilization
4
Armored warrior of medieval times
6
Practice of farming and growing food
7
Sudden overthrow of a government
8
Long and distinct period of history
9
Alloy of copper and tin used in early tools