Which one of the following did NOT account for the increasing population in Europe between 1850 and 1880?

Question

Quizplus · Accepted Answer

The eradication of polio did not significantly contribute to the increasing population in Europe between 1850 and 1880. However, the rising birthrate and the development of vaccinations against diseases such as smallpox and tetanus helped to reduce infant mortality rates and increase life expectancy, leading to a population increase during this time period.

Which One of the Following Did NOT Account for the Increasing