横向
1
Person with no fixed home
3
Ancient Egyptian picture writing
5
Practice of farming and growing food
7
Government ruled by a king or queen
8
Medieval land-for-service system
9
Territory controlled by another country
10
Large territory under one ruler
11
Period of one hundred years
纵向
2
Belonging to a very old period
4
Person who travels to discover new lands
6
Succession of rulers from same family
10
Long and distinct period of history
11
Advanced stage of human society
12
Formal agreement between nations