Moreover, they are not much aware of the methods and devices of family planning. Some people, especially those belonging to the lower strata of society think that if they have more hands in the family, their income can increase. But they do not care or know that every new comer also comes with a mouth which is to be fed.
The multiplying numbers require more food, clothing, housing, healthcare, education, employment, etc. Certainly, in the long run neither food nor jobs and other provisions, supplies and facilities can keep pace with the numbers.
So, the best way and the only way are to check population for which drastic measures should be adopted. Those with large families should be made to pay heavy taxes and those having small families of one or two children only should be rewarded.