Think all the scammers moved from Nigeria to Ghana.

Considering living conditions in Africa are not to good with all the tribal wars and corrupt governments I imagine a lot of them are just looking for a better place to live. Others may be trying to escape persecution.

To a large extent, it is a matter of failed states and failed economies, growing overpopulation causing an increasing degradation of natural resources.

Isn't it because the developed world has been taking all their resources, while it keeps them in debt and poverty?

There is a huge wealth disparity between most African nations and the Western world. You would fully expect a large percentage of people who have the means to get out of the African nations to do so. That's the same thing you see with people attempting to emigrate out of Central American nations.

Most of the western world is oblivious to what is, and has been happening in most of Africa. Aside from movies, there are few outlets that shed light.

Many, many African nations are in one form of civil war or another. Many of those nations have seen very little "peace" in the last 200 years. The reasons vary, sometimes it's political, sometimes tribal, and sometimes religious. Genocide and it's various other forms are not uncommon. Because of the lack of publicity of such matters, countries like this are also safe-havens for various organizations around the world that would prefer to stay out of sight.

Add to all of that there is widespread hunger, disease, and supplies are often scarce or just plainly withheld.

canadian mining companies [and their displacement of people] for one and our f 18 s for two. Libya WAS the wealthiest country in africa [ and secular ruled] till we demolished it because ghaddafi started his own african bank

Very terrible