横向
1
Person owned as property
2
Ancient Mesoamerican civilization
4
Exchange of goods between peoples
5
Armored warrior of medieval times
6
Person who travels to discover new lands
7
Fundamental law of a nation
9
Succession of rulers from same family
纵向
2
Relating to the Middle Ages
3
Government elected by the people
8
Armed entry into another territory
10
Union formed for mutual benefit
11
Long and distinct period of history