横向
1
Armed conflict between nations
3
Person who travels to discover new lands
4
Succession of rulers from same family
9
Payment made to show submission
11
Long and distinct period of history
12
Large territory under one ruler
13
Object made by humans from the past
14
Fortified medieval residence
纵向
2
Period of one hundred years
5
Ancient Egyptian picture writing
6
Ancient empire that conquered much of Europe
7
Practice of farming and growing food
8
Formal agreement between nations
10
Ancient Mesoamerican civilization