To ease this difference and help the less fortune countries
Replace "Fortune" with "Fortunate"
Most of the people in African and poor countries live in difficult conditions because of their countries locate in areas where lack of natural resources and have bad weather conditions for development as well
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A better way to write this would be "
Most people in poor countries (I guess Africa falls under poor, so it's better to avoid redundancy)
live in areas with very little resources and inclement weather conditions, allowing for very little development "
In these countries, citizens are in need for foods, corrupt and unemployment rate is at high level, the consequences of AIDS are devastating quickly
... this sentence has lacks parallel structure. You can write: "
In such countries, food is scarce, corruption and unemployment rates are high, and Disease is Ubiquitous ".
Now, your essay lacks solid content, you basically have too points:
1. Developing countries have a bunch of internal problems.
2. Developing countries owe rich countries money.
The points are good, but there's very little development of your points that would entice the examiner to give you a good score.