I have no idea, but I wouldn't use Wikipedia.. The "facts" on there aren't always true. That's why we aren't allowed to use it in my high school.
Answer:
MEDCs are countries which have a high standard of living and a large GDP . LEDCs are countries with a low standard of living and a much lower GDP. ... Most of the southern hemisphere is less developed, while countries in the northern hemisphere are more developed.
Explanation: