Because money isn't capable of feeding the hungry...teaching them how to grow crops, harvest seeds, and preserve the food they grow, will feed them for generations after money is nothing more than a footnote in history books.
I've never understood why people look at this wrong...money was never meant as an edible...nor was it meant to cure hunger...it is a means of conducting transactions...the fact that 99% of the people on this planet have been fooled into using it for food...doesn't mean it is the answer to solving hunger...I can do more to cure hunger with a handful of seeds in my pocket than I can with a million dollars in the bank....
The million dollars will eventually run out...and what little food it can buy...won't last very long at all...but if I grow food with my handful of seeds...and harvest the seeds from those plants, while preserving the food from the first plants...I can grow a garden and teach my kids how to keep it cultivated...and it has the ability to feed mouths for hundreds of years after I'm gone...you don't need money to cure hunger...you need food growing education...
So can you farm a Chemically wasted land? Can you crop on a disease ridden region? Money can not be eaten but can go a long rectifying some of this wrongs e.g Detoxify polluted lands, cure the sick, provide clothing and food for them......They know how to do all the things you mentioned, something way beyond them came and messed things up for them!
Yes...as a matter of fact you can farm chemically polluted land...certain plants pull toxins and heavy metals from the soil...and there are several natural materials you can use to neutralize the soil...as far as money curing the sick...that's the single dumbest thing I've read in my entire life...there is no profit in a cure for anything...which is why pharmaceutical companies come up with treatments...if they cured you, you'd stop coming to see them...but if they treat you, they can drain your bank account until you die...and finally, if they knew how to do the things I mentioned, there wouldn't be a hunger problem...not to mention, we wouldn't have to spend money clothing and feeding them...the fact of the matter is...they do NOT know how to do any of the things I mentioned...they've NEVER been taught...in fact, they've been trained to rely on failed infrastructures and government handouts...but far be it from me to try and educate those who are incapable of conducting a modicum of research...
I can see how myopic your thinking is.......If you an Avid Researcher then you would know about some of this countries and their Agricultural Skills, If you fail to get the context of this post, then you can Navigate away with your mediocre perception of Developing Nations!