Across
1
Metal that replaced bronze in tools
3
Object made by humans from the past
4
Male monarch ruler
5
Period of ten years
10
Ancient empire that conquered much of Europe
Down
2
Medieval religious military campaign
4
Armored warrior of medieval times
6
Advanced stage of human society
7
Ancient Mesoamerican civilization
8
Sudden overthrow of a government
9
Person who travels to discover new lands