How art periods rise and fall
The trope of the rise and fall of civilisations has been around as long as the first Greek historians put pen to paper. The idea that Empires conquer, expand, grow decadent, and collapse is embedded in the human psyche. It makes sense to most people that artistic development should follow a similar pattern. But when examined closely, artistic development seems to follow quite a different path. There are times when states emerge with little to no artistic development, and times when art styles flourish in empires that are on the decline. What then accounts for the emergence of different art styles at different times?