横向
1
Ancient Mesoamerican civilization
2
Person who travels to discover new lands
3
Ancient empire that conquered much of Europe
6
Government ruled by a king or queen
7
Formal agreement between nations
9
Period of ten years
11
Medieval land-for-service system
纵向
1
Movement of people to new areas
4
Ancient Egyptian ruler
5
Legislative assembly of a country
8
Union formed for mutual benefit
10
Person with no fixed home