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50 Most Populated Countries in the World in 2024

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In this article, we will look at the 50 most populated countries in the world in 2024. If you want to skip our detailed discussion on population growth and its impact, go ahead to the 15 Most Populated Countries in the World in 2024

Less than 1 billion people lived on Earth for most of human history. In fact, at the time of the Agricultural Revolution in 10,000 BC, only 5 to 10 million people lived on the planet. For perspective, the population of New York City alone is 8.4 million today. At the beginning of the Industrial Revolution, there were approximately 1 billion people on tearth. However, in the last two hundred years, we have added 7 billion more as the world population reached the milestone of 8 billion people in 2022. It is essential to note that the population growth rate, while still positive, has decreased significantly in the last decade.

The United States is one of the most populated countries in the world. Its population is massive compared to other countries in its region, which leads to the following question: what causes population growth in a country? Demographers cite four main factors driving population growth: fertility rates, mortality rates, migration, and the initial age profile of the population. Fertility rates refer to the number of births per woman.

Mortality rates are the measure of deaths in a particular population. The higher the mortality rate, the slower the population growth. When mortality rates are lower, more people are available to reproduce, which leads to higher population growth. If the initial age profile of the population is young, there will be higher population growth. The opposite of this is also true with an older age profile.

The fourth factor, migration, is quite obvious. As newer people enter a country, they increase their population and reproduce to keep the future growth rates high. Considering these four factors, it is easy to understand why the world population increased significantly after the Industrial Revolution. Technological advancements in medical fields and better living conditions increased fertility rates and decreased mortality rates.

Life expectancy is also increasing all around the world. However, this still does not explain why some underdeveloped countries have one of the highest population figures. A fifth factor, that demographers have only recently started to comprehend, is religious groups. Some religious groups have higher population growth rates than others. Muslims, for example, have the highest fertility rates among the world's major religious groups.