This is expressing the material wealth and excess of the 1920s.
Explanation:
At the time after the war, stock markets were high and people began to experience more national wealth and extravagance, a huge difference when compared to the previous years, which encompassed WWI. This shows how things were so extravagant on the outside, but it almost foreshadows the period of depression and excessively impoverished time to come in the following years.
