video and reading on population [mid-term]

In retrospect, the video compared 2 developed countries: Japan and the United States. There are the lower birth rate and aging problem in Japan. Because Japanese women pay attention on their jobs rather than raising a baby. Additionally, to raise a successful baby is so expensive. U.S.A also have the problem of population because of a large quantity of the new immigrations. On the other hand, the first author in the reading has been argured the second author who wrote a book points out that the population is not a peoblem. In the reading,some example of economic, agriculture problem is given to support the first author's opinion.
However, i think developing countries need to control the growth rate of population in order to give high quality of life to citizen.