横向
1
Alloy of copper and tin used in early tools
5
Union formed for mutual benefit
6
Armored warrior of medieval times
7
Ancient Mesoamerican civilization
9
Person who travels to discover new lands
11
Person who buys and sells goods
12
Person with no fixed home
纵向
2
Ancient empire that conquered much of Europe
3
Person owned as property
4
Movement of people to new areas
8
Government by the people
10
Handwritten historical document
13
Military conflict or fight