Why people have larger families in ledcs than in medcs?

People tend to have larger families in Less Economically Developed Countries (LEDCs) due to factors such as lower access to education and family planning, cultural norms favoring larger families, and higher child mortality rates that lead parents to have more children as a safeguard. In contrast, More Economically Developed Countries (MEDCs) often have higher educational attainment, better access to healthcare and contraception, and economic conditions that encourage smaller family sizes. Additionally, in MEDCs, individuals may prioritize career and personal development, further contributing to smaller family units.