横向
1
Government ruled by a king or queen
4
Legislative body in ancient Rome
6
Legislative assembly of a country
8
Roman arena fighter
9
Metal that replaced bronze in tools
11
Period of one hundred years
12
Fundamental law of a nation
纵向
2
Government by the people
3
Union formed for mutual benefit
5
Practice of establishing foreign colonies
7
Ancient empire that conquered much of Europe
10
Ancient Mesoamerican civilization
13
Person with no fixed home
14
Advanced stage of human society
15
Person who buys and sells goods