横向
1
Person who travels to discover new lands
5
Legislative body in ancient Rome
6
Sudden overthrow of a government
7
Period of ten years
8
Person with no fixed home
10
Person who buys and sells goods
纵向
2
Practice of establishing foreign colonies
3
Alloy of copper and tin used in early tools
4
Exchange of goods between peoples
9
Armed conflict between nations
11
Government by the people
12
Payment made to show submission