To elaborate on this, not that it is particularly necessary, but that "particular skill set" is what forms the basis for critiques of IQ tests based on cultural bias. Because the skill sets necessary to survive in one world - even if that world is only a mile or two away - can be significantly different from those needed to survive in another world. Imagine if RevLeft got together and decided to make a test designed to test the intelligence of its userbase, but were somehow naive enough to not be able to differentiate between intelligence and knowledge, as are proponents of IQ tests. The questions on the test would likely be a mix of information about various revolutions, dead white men, and communist theory. Apply that test to the general population and what would you find? That users of RevLeft are on average a lot more intelligent than everybody else. But that would be ridiculous. Why? Because knowledge of communist shit doesn't make a person smart. Similarly, knowing what the Qur'an is (a question on a version of the test from the 60s which indicated a very high level of intelligence) or being able to identify patterns have nothing to do with how smart you are.
1% of scientific advancement... what does this even mean? How do you quantify "scientific advancement" in the first place? Who measured this, and what are the sources for it? What time period is it even from? This "statistic" is something that could only be taken seriously by a person incapable of thought; perhaps an idiot or a small child, which incidentally forms the largest amount of the ranks of racists, although I'm happy to hear that you've since grown up and moved on from that.
To address the larger argument, though, which is essentially that African "nations" are poorer, have contributed less theory that we're aware of, etc. this is actually a partial illusion. There is a reason why you aren't exposed to the vast majority of the thought not only of the African continent but of the majority of the entire world, and that is because of language barriers, cultural barriers, and the economy. And what I mean by the last one is that it isn't really profitable to translate a very nice poem from an author in Namibia who doesn't speak English that was written for a local newspaper - even if it was enjoyed by everybody who read it. Similarly, African colonialism was not "500 years ago" - the scramble for Africa took place in the 1900s and the end of formal colonialism on the African continent is younger than WWII. But still it persists through capitalist economic imperialism and continues to export the wealth of the continent to prop up the West and allow its relative wealth and power in a sort of negative feedback cycle where the more exploitation that happens, the more it can be self-justified by the lack of progress on part of the exploited. That this has been going on for centuries and in spite of it there is still significant development on the African continent today does not show weakness but rather shows an incredible resilience on part of the people there to grow in spite of extreme exploitation and global neglect. Which is not to elevate the African people to superhuman status or to otherwise deprive them of their humanity - they are people and they are resilient in the same way that all people are.
And yet still, if your picture of Africa in your mind - which in and of itself is not just a giant savannah but is actually a continent larger than the US, China, or Russia with even more cultural variations than any of the three, which are themselves extremely culturally diverse countries - has a few malnourished tribesmen dancing around in loincloths, then your picture of Africa is simply wrong. It would be like judging American civilization in the 1800s by watching a native American dance from one of the hundreds of tribes which all had their own separate cultural, political, religious, etc. organizations. Which is not to say that there is anything wrong with the native cultures, habits, etc. of the Americans before white people or the tribal Africans today, but rather, that such a view is not at all representative of the entire continent in the same way that a picture of New York City would not at all be representative of even New York state, let alone the entirety of the United States. It is racially-biased bullshit peddled toward people who already want to believe that Africa is, as you put it, a "shit hole", and whom are either incapable or unwilling to consider the idea that there is more to it than meets the eye.