横向
1
Exchange of goods between peoples
4
Payment made to show submission
8
Belonging to a very old period
9
Ancient Egyptian ruler
10
Ancient empire that conquered much of Europe
11
Ancient Mesoamerican civilization
纵向
2
Government ruled by a king or queen
3
Alloy of copper and tin used in early tools
5
Handwritten historical document
6
Deadly epidemic disease
7
Government by the people