横向
1
Male monarch ruler
3
Payment made to show submission
4
Collection of traditional stories
5
Metal that replaced bronze in tools
6
Exchange of goods between peoples
10
Government ruled by a king or queen
12
Advanced stage of human society
14
Formal agreement between nations
纵向
2
Practice of farming and growing food
7
Government by the people
8
Movement of people to new areas
9
Belonging to a very old period
10
Relating to the Middle Ages
11
Ancient empire that conquered much of Europe
13
Practice of establishing foreign colonies