population increased due to industrial revolution.
The growth in the factory system means more jobs, so more people can provide for their families the way they need to, this would lead to a bigger population. the negative side of this is the chance of air pollution.
The expansion of education helped educate more children and adults.
the rise of labor unions , many citizens went on strike to fight for their rights.
the growth of middle class made less poor people and helped more people provide for their families
better health care helped increased population and save people lives thanks to Edward Jenner.