The late 1920s were not as good as they appeared to be. Spending was starting to slow down. People were going into debt buying things and investing all their money in the stock market.
Companies weren’t making as much money because they were producing more items than people were buying. Farmers had invested in machinery to produce more food during the war, but now they were producing more than people wanted to buy.
People and businesses struggled to make an income during the 1920s and 1930s.