This is a somewhat simplified view. The prevention of famines is related to a wide variety of factors, not just the availability of nitrogen fertilizer, such a

This is a somewhat simplified view. The prevention of famines is related to a wide variety of factors, not just the availability of nitrogen fertilizer, such as water infrastructure (deep wells, canals, etc. to alleviate droughts), transportation systems like railroads and jet planes (to bring food relief rapidly to famine-stricken regions), political stability (as wars can disrupt water and food infrastructure), etc.