As the World War II era. Prachakroklap from the war caused a rapid increase in infant population. So there must be a family planning to reduce the growth rate of the population.
The postwar era Population came from the war caused the infant population is increasing rapidly. I need family planning to reduce the growth rate of the population.
As the era after World War II. The population came from the battle, causing infant population is increasing rapidly. And there are family planning to reduce the rate of growth of the population.