横向
1
Freedom from outside control
6
Government ruled by a king or queen
10
Government by the people
11
Period of ten years
12
Formal agreement between nations
纵向
2
Person with no fixed home
3
Alloy of copper and tin used in early tools
4
Sudden overthrow of a government
5
Movement of people to new areas
7
Period of one hundred years
8
Person owned as property
9
Medieval land-for-service system