Honestly off the top of my head I wouldn’t know that the Niger is Africa’s third longest river, so I’m glad they call it that, since it makes the whole story more interesting than just an arbitrary river doing a weird thing.

Besides… it gives it that clickbatey touch of " oooh, i wonder what’s tge third longest river in africa! Better pause and check the article!"

It’s probably south of something though, unless you’re at the north pole