横向
1
Period of one hundred years
5
Metal that replaced bronze in tools
6
Person who travels to discover new lands
7
Person who buys and sells goods
8
Alloy of copper and tin used in early tools
9
Legislative body in ancient Rome
10
Practice of establishing foreign colonies
11
Period of ten years
纵向
2
Union formed for mutual benefit
3
Freedom from outside control
4
Government ruled by a king or queen
12
Territory controlled by another country
13
Armed conflict between nations