Mechanisation, demand for cash crops and settlements (apart from economic and social changes like the concept of family as against communities) played a major role in the movement towards modern farming. Food security is a problem because of climate change, and this would impact marginalised groups and those affected by climate change (livelihood). But, you rightly say that the demand for increased food demand has little correlation with population. (Older population may not need much calories given that they are going to live longer.)
Mechanisation, demand for cash crops and settlements (apart from economic and social changes like the concept of family as against communities) played a major role in the movement towards modern farming. Food security is a problem because of climate change, and this would impact marginalised groups and those affected by climate change (livelihood). But, you rightly say that the demand for increased food demand has little correlation with population. (Older population may not need much calories given that they are going to live longer.)