横向
1
Government ruled by a king or queen
3
Payment made to show submission
4
Government elected by the people
6
Person who travels to discover new lands
9
Government by the people
10
Metal that replaced bronze in tools
12
Legislative assembly of a country
13
Large territory under one ruler
纵向
2
Roman arena fighter
3
Exchange of goods between peoples
5
Belonging to a very old period
7
Object made by humans from the past
8
Freedom from outside control
11
Person who buys and sells goods