This article explains how certain factors characterize family size. This also explains why poor people in developing countries tend to have large numbers of children. Most people are convinced by their family values ​​and their environment. However, some people face the challenge of surviving. In general, poor people have many children due to lack of education and lack of resources to care for their children. Another revolution concerns the size of the family determined by the man. Rich countries are above average and middle-income countries are average; unlike low-income countries, they are below average (p. 198). There are other key factors that also determine “why do poor people have larger families?” » This essay will answer the following questions: 1.) Describe the factors that influence family size? 2.) Why do poor people in developing countries generally have large numbers of children? Factors that influence family size Reading Chapter 8, revolutions gave Homo sapiens an authoritative role of the view that humans are defined as revolutionary. Revolutions have played a major role in moving humans from confined cultures to the universal human cultures of today (p. 194). Five factors influence family size. Wright and Boorse (2011) suggested that they are: 1.) The Neolithic Revolution – changed the way humans lived. The shift from hunting and gathering to agriculture led to permanent settlements, the establishment of social classes, and the eventual rise of civilizations (p. 194).2.) Industrial Revolution - changed the way in which the world produced its goods. In the 17th and 18th centuries, the human population numbered one billion people. It was not a political, social or cultural revolution but an economic revolution (pp. 194-5). 3.) Medical revolution – improving medical conditions for humans. In the late 1800s, Louis Pasteur and others indicated that diseases originated from bacteria, viruses, and parasites (p. 196). 4.) The Green Revolution - the effective use of pesticides and improved techniques of fertilization, irrigation, mechanization and soil conservation. This happened around World War II (p. 196).5.) The most recent revolution - Internet, computers, nanotechnology, robotics and solar technologies (p. 197). Therefore, revolutions allowed the growth of the family through the evolution of tools, medicines and technology. In today's society, hand tools primarily run on batteries or electricity. There are also preventive measures that prevent you from contracting diseases. Additionally, computers and other technologies inform everyone about what is happening in the world today. Why do poor people have a large number of children According to Wright and Boorse (2011), poor people have a large number of children due to income and socio-cultural conditions (p..