Since I went to school and was taught about economics, I concluded that too large a population is a serious problem for the economy, but after many countries reported population shortages because many people did not want to have children, it now creates a more complicated problem, many places or cities now have to look for workers cheap labor from abroad thereby making production costs higher.
Under population is not very good and that is what will make a country open their borders for foreigners out of need for labour force. I think there is a solution to this through government policy by giving rewards to couples who increase the numbers of children they give birth to depending on the number stipulated by government. Another point is to discourage abortion because people do that as final resort when they have no other option.
Population plays a major role to strengthen the economy. If education is given to children, they will become a good people of the country, in this way population or more children will be helpful for country. More children if they will work, they will earn more money by working. When I talk about education, it's not meaning a academic education, it means a financial education that will give your child a mindset of rich people. If a country want to progress, they should train their child for work. When they will reach to young age, they will play a vital role in country economy. They can do a lot of businesses and they can sell businesses, they can also purchase a profitable businesses, in young age they will have power to do every type of investment. They should have knowledge of Bitcoin, in early age, if they will be skilled in these things, they will double their income for a multiple of times. Increase in population is not an issue, the issue is illiteracy, because without education man I'm s nothing, he cannot take decisions for himself.