横向
1
Movement of people to new areas
4
Large territory under one ruler
6
Payment made to show submission
9
Relating to the Middle Ages
10
Union formed for mutual benefit
11
Ancient Mesoamerican civilization
纵向
1
Government ruled by a king or queen
2
Period of ten years
3
Sudden overthrow of a government
5
Armored warrior of medieval times
7
Military blockade of a fortified place
8
Armed entry into another territory
12
Armed conflict between nations