The classical music was popular music at the time. So I would go with that, nationalism, and immigration. Do not quote me on it though.
Symbolic proportion is the apparent disproportionate relationship between objects within a piece.
Others define symbolic proportion as the creation of an apparently disproportionate relationship in order to convey the importance of something.
Firstly, Nazca pottery is characterized by strong colors. The images shown on Nazca pottery are staring eyes, unspecified gods and people (often just a face); in addition, animals and creatures such as lizards, monkeys, birds, whales and mythical ones are often shown. They were very innovative with the form as well.
Moche pottery also showcased both people and animals. Compared to the Nazca pottery, Moche made their much less colorful. There's usually a cream or white background with red decoration. Their human representations usually have some supernatural features while the animals (birds, fish, feline, reptiles, deer, foxes, monkeys etc.) are both represented realistically or hybridized.