Population of the world had grown very rapidly because of many factors: (a) Rapid increase in Natural Growth Rate. (b) Eradication of many deadly dangerous diseases. (c) Migration of the people from developing countries to developed.  

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The Reasons for Rapid Growth in World Population

There are several factors that have contributed to the rapid growth of the world population. Below, we will delve into the key reasons behind this phenomenon.

1. Decline in Mortality Rates:
One of the primary reasons for the rapid growth in world population is the significant decline in mortality rates. Advances in healthcare, improved sanitation, and expanded access to medical facilities have led to a decrease in infant and child mortality rates. Additionally, the development of vaccines and antibiotics has contributed to the reduction of diseases that were once fatal. As a result, people are living longer, which leads to an overall increase in the global population.

2. Increase in Birth Rates:
Another factor driving population growth is the increase in birth rates. Despite the decline in mortality rates, birth rates have remained relatively high in many regions, particularly in developing countries. Cultural and social factors, such as the importance of large families or lack of access to family planning methods, contribute to higher birth rates. Subsequently, the combination of lower mortality rates and higher birth rates leads to a rapid increase in population size.

3. Improved Food Production:
Advancements in agriculture and food production techniques have played a crucial role in supporting the growing population. The Green Revolution, for instance, introduced high-yielding crop varieties, improved irrigation systems, and increased the use of fertilizers and pesticides. These innovations have significantly increased food production and helped meet the nutritional needs of a larger population. Consequently, improved food security has led to reduced mortality rates and further population growth.

4. Urbanization and Migration:
The process of urbanization has also contributed to the rapid growth of the world population. As people move from rural areas to cities in search of better economic opportunities and improved living conditions, urban areas experience population growth. Moreover, internal and international migration due to factors such as conflicts, political instability, and economic disparities also contribute to population growth in certain regions.

5. Technological Advancements:
Technological advancements have had a profound impact on population growth. Access to modern contraception methods and family planning services has improved, allowing individuals to make informed choices about family size. Additionally, medical breakthroughs such as assisted reproductive technologies have increased the chances of conception for couples facing infertility issues. These advancements have led to an increase in the number of planned pregnancies and subsequently contributed to population growth.

In conclusion, the rapid growth of the world population can be attributed to a combination of factors, including declines in mortality rates, increased birth rates, improved food production, urbanization and migration, and technological advancements. Understanding these factors is crucial for policymakers and organizations to address the challenges and implications associated with a growing population.