Assortment means there are many variations/types of an object or objects.
Hope this helps!
I believe the answer is:
- Pure mathematics
Proven by the difference in knowledge on astronomy between aztec culture and the Castillian.
- Urban architecture
Proven by the superior irrigation system that Aztec civilization had compared to Castilian civilization at that time.
Answer:
I think that it's Allerion.
Explanation: