横向
1
Military conflict or fight
4
Roman arena fighter
5
Government ruled by a king or queen
7
Person who travels to discover new lands
8
Period of one hundred years
9
Person owned as property
12
Long and distinct period of history
纵向
2
Ancient Mesoamerican civilization
3
Practice of farming and growing food
6
Relating to the Middle Ages
10
Government elected by the people
11
Union formed for mutual benefit
13
Person who buys and sells goods