The ottoman empire was called the “sick man of europe” in the mid-1800s because of a. weak leadership b. military defeats c. attacks from seljuk turks d. natural disasters (gradpoint)

I think it might be d. But I'm not sure tell me if im. wrong pls: )

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.