These two factors gave rise to a high relative income, which encouraged high fertility. Following this period, the next generation had a greater desire for material objects, however, an economic slowdown in the United States made jobs harder to acquire. This resulted in lower fertility rates causing the Baby Bust.
These two factors contributed to high relative income, which promoted high fertility. Following this era, the next generation's desire for material goods increased, but an economic downturn in the United States made job acquisition more challenging. This led to lower fertility rates and the phenomenon of the Baby Bust.