What caused overproduction in the 1920s?

Overproduction in the 1920s was primarily driven by advancements in technology and industrial efficiency, leading to increased manufacturing capabilities. The rise of consumer culture, fueled by easy credit and mass marketing, encouraged consumers to buy more goods than they needed. Additionally, agricultural overproduction occurred as farmers expanded their output in response to high prices during World War I, but subsequent demand drops led to surplus. This imbalance between supply and demand contributed significantly to the economic instability that preceded the Great Depression.