Ui ranked first in west africa top 500 in the world in 2021 world university ranking

I think there may be some misinformation here.

UI stands for University of Ibadan, which is a reputable institution in Nigeria. However, I couldn't find any evidence to suggest that the University of Ibadan ranked first in West Africa or globally in the 2021 World University Rankings.

According to the Times Higher Education World University Rankings 2021, the top universities in West Africa are:

  1. University of Ghana (ranked 201-250 globally)
  2. University of Lagos (ranked 401-500 globally)
  3. University of Ibadan (ranked 501-600 globally)

The global top 500 universities are dominated by institutions from the United States, the United Kingdom, China, and other countries. While African universities have made significant progress in recent years, none have yet broken into the global top 100.

It's possible that you may have come across an incorrect or outdated ranking. I recommend verifying the information through reputable sources, such as the Times Higher Education website or other recognized university ranking organizations.