Its an awkwardly asked question, but the Persian Wars are often seen as the end of the classical period.
Answer:
Urban areas doubled, tripled, or quadrupled in size which led to over crowding in cities. Sometimes a large population is a good thing, but in this case the population was too big and caused many health problems.
Explanation:
Vellum is the correct answer i believe
In English pls this might fall in the Spanish section
