Check on Google about Venezuela inflation and how their money have 0 VALUE they dont use money to buy something they change food, medicaments.
I see a photo on google about how people from Venezuela throw money on street. The inflation in Venezuela for 2019 is something like 1.900% ! wich is crazy.
In some country when inflation reach 4-5% is a big problem think about Venezuela 1900% inflation is very huge.
Cryptocurrency could save them, i dont know why too many people dont accept cryptocurrency, Blockchain is the future !