I'm yet to see a South African, Nigerian, Zambian, Malawian, Zimbabwean or any other African joining together to run a business or company.
But I've seen us together working for White people, Indians or other races.
In Dar es Salaam, Tanzania there's this

exquisite Lounge. It has an elegant restaurant, Bar and Casino.
I was intrigued to find out that it is a joint venture between a man from Greece, an Indian and a Chinese couple.
These are different races with totally different languages, culture and geographical location.

But they are able to work together successfully.
Why can't people of the same race just different tribe's and divided by borders fail to work together??

We have a long way to go.