The root of Africa's problems is there are more Africans than Africa's resources are developed to decently support. Sending them $15 billion, or $150 billion for that matter will slightly improve things through Western food and medicine, for as long as the checks keep coming. The day the handouts stop, they will be even worse off then they are now - because thanks to that food and medicine we're going to ship them, there will be even more of them and their resources will be spread that much more thinly.
The only way Africa will get out of the hole it's in is the imposition of stable governments and rule of law to allow development of effective economies. This will never happen, because simple acknowledgement that this needs to be done is tacit admission that black Africa is incapable of running itself. Apparently watching them chop each other up with machetes and starve is preferable to being "racist."
There used to be countries in Africa that worked. Under European administration of course. But we called them racists and boycotted them while the Soviets propped up their enemies. Now the whites have had their property seized and left, the economies have collapsed, and the people starve in the streets.
There's progress for you.
In the meantime, the bureaucrats plead for money so they can escape Africa and go live in the UK or the US.
They couldn't care less about their fellow Africans!