First Kola the notion of starting a photography business in an african city seems to be like wanting to catch fish from somewhere in the ocean or sea while you are standing on a landlocked country.
I would ask you
1.Have you been working as a photographer before or are you just starting up due to your question on basic start-up equipment?
2.Have you been to any african country?
3.What type of photography are you looking to specialize in or do you specialize in ?
4.Is it a short term goal or long term?
5.If you have a country in mind what are the requirements on work permits and visa?
6.If you select a city what is the business environment like will it favor you or work against you.
7.Are you writing from Mars (location Unknown) and why not first work around your area for a local newspaper and try to get assignments in africa to test the water.
Be realistic and research because assumptions is the mother of all