横向
1
Large territory under one ruler
3
Ancient Mesoamerican civilization
5
Government ruled by a king or queen
6
Exchange of goods between peoples
7
Armored warrior of medieval times
9
Legislative body in ancient Rome
纵向
2
Period of ten years
4
Union formed for mutual benefit
8
Government by the people
10
Succession of rulers from same family
11
Long and distinct period of history