Across
1
Alloy of copper and tin used in early tools
3
Ancient Mesoamerican civilization
7
Relating to the Middle Ages
8
Practice of establishing foreign colonies
9
Deadly epidemic disease
10
Armored warrior of medieval times
Down
2
Fortified medieval residence
4
Armed entry into another territory
5
Payment made to show submission
6
Person who buys and sells goods
11
Long and distinct period of history
12
Union formed for mutual benefit