Why is an economic advantage for a developed nation often a disadvantage for a developing nation?

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.