Across
1
Period of one hundred years
2
Armed entry into another territory
4
Practice of establishing foreign colonies
9
Ancient Mesoamerican civilization
10
Sudden overthrow of a government
11
Belonging to a very old period
Down
2
Metal that replaced bronze in tools
3
Object made by humans from the past
5
Period of ten years
6
Long and distinct period of history
7
Person who travels to discover new lands
8
Large territory under one ruler