Across
1
Object made by humans from the past
4
Ancient Mesoamerican civilization
7
Ancient empire that conquered much of Europe
9
Formal agreement between nations
10
Armored warrior of medieval times
11
Period of one hundred years
12
Metal that replaced bronze in tools
Down
2
Practice of establishing foreign colonies
3
Deadly epidemic disease
5
Practice of farming and growing food
6
Succession of rulers from same family
8
Belonging to a very old period