What might be called a second or post-Industrial Revolution the roaring economy of the 1920s involved all the following EXCEPT?

The roaring economy of the 1920s, often referred to as a post-Industrial Revolution period, was characterized by rapid industrial growth, consumerism, and technological advancements. However, it did not primarily involve significant agricultural expansion; in fact, the agricultural sector faced challenges during this time, including falling prices and overproduction. Instead, the economic boom was largely driven by manufacturing, Stock Market speculation, and the rise of consumer goods.