Across
1
Payment made to show submission
4
Ancient Mesoamerican civilization
6
Formal agreement between nations
7
Metal that replaced bronze in tools
8
Legislative assembly of a country
9
Union formed for mutual benefit
10
Belonging to a very old period
Down
2
Armored warrior of medieval times
3
Object made by humans from the past
5
Person who buys and sells goods
11
Fundamental law of a nation