横向
1
Object made by humans from the past
4
Ancient empire that conquered much of Europe
6
Relating to the Middle Ages
8
Succession of rulers from same family
9
Fortified medieval residence
10
Person with no fixed home
纵向
2
Payment made to show submission
3
Ancient Mesoamerican civilization
5
Advanced stage of human society
7
Period of one hundred years
11
Armed entry into another territory
12
Person who travels to discover new lands