Answer:
Many countries do not have access to modern agricultural processes.
Explanation
"In desert regions, wells and irrigation are needed to supply water before crops can be grown at all. Insects, plant diseases, and rats are estimated to ruin one-third of the harvest in some areas, and where lands have been farmed for centuries the soil nutrients are gone. Proper fertilization and hybrid plants could easily multiply crop yields."
This Quote shows that third-world countries crops are going to die because they don't have any modern ways to get rid of insects, plant diseases, and rats.