Which of the following factors to limit population size is directly influenced by lack of food resources?
a. famine
b. disease
c. war
d. birth control

a. famine

Industrialisation affected the poor in a way that they, as manual labors, were replaced by machinery in order to do the tasks or jobs that were usually done manually. During industrialisation, agricultural society was replaced to a manufacturing one. Because of this, there was a lower demand for workers as many lost their jobs because of machinations. Due to the higher demand for jobs by these people, many of the poor people accepted jobs with low wages to compete for those others who are also in need of jobs.  

"budgeting is not just for the people who do have enough money. it is for everyone who wants to ensure that their money is enough."