Answer:
I think it was The Great Depression. Trying to support the troops and everyone dying didn't help and the government eventually (almost) ran out of money, therefore creating a chain effect. From businesses losing funding from the government and then having to sack workers because they could not pay them. The Depression ended around when World War II happened, then everybody went to war and was able to bring in money. Other government ideas happened, like working and getting food coupons to get food.