There's numerous factors that contributed to the increase in the human population. The main factor was the advances in the medical field, invention of lot of cures, vaccines, and machines that help improve the human health. The industrialization also was a major factor, as this technological advancement led to change in lifestyle of the people, attracting them in the cities, having safer lives, safer workplaces, not being exposed to the outside factors. The technological advances in the agriculture resulted in much higher food production, so the malnutrition problem was solved. These are some of the major technological advances, though there are many more, all of which managed to improve the life quality and increase the life expectancy, resulting in increase in the population.