横向
1
Medieval land-for-service system
2
Ancient Mesoamerican civilization
3
Object made by humans from the past
4
Person who travels to discover new lands
5
Fortified medieval residence
7
Person who buys and sells goods
9
Military conflict or fight
11
Person owned as property
12
Belonging to a very old period
纵向
2
Movement of people to new areas
3
Practice of farming and growing food
6
Period of ten years
8
Large territory under one ruler
10
Handwritten historical document