Identify depicted African (?) bike ...or tell me anything you can say definitely about this particular depicted old African bicycle:

The purpose of this question (my personal reason for asking) is to gather as much details and information about this particular image / bike for the story that I am writing. Where this picture / African boy / African bike is one of the 3rd level elements.
I would like to learn virtually anything about it that I can learn (and add to my story) or that you can provide with any level of certainty. I.e.:

type,
model or model name,
manufacturer name,
originating country,
production date, period or bike age,
any particular technical solutions used within,
any particular parameter like width, weight, wheels dimensions, tyres type,
whether it is a single-set model or something that looks like a wreckage made out of twelve different bikes etc.

This might sound weird, but virtually anything, you can provide will be valuable for me. Because right now (and based only on uploaded file's name) I can only say that this is a bike ridden somewhere in Africa. Not enough, as for my story.
Validated that this question is on-topic.
Photographer here.
The bike is a very common one used here in Tanzania. It's much cheaper than the multi gear mountain bikes.
Sorry, don't think there was anything special with the bike, unless of course you look at the young boy riding it and appreciate his hard work :)
Cheers