bitcoin is a future digital currency, i strongly believes that before BTC celebrate 50 years in existence at least one or two African countries is going to legalis it. because block chain network is expanding every day by day. and most of the countries in Africa have the knowledge BTC how it works.
It's in two ways from how I view it here; it's a future digital currency for those that haven't adopted it either as a store of value or transaction purposes and while for those of us already making use of it it's nothing of a future digital currency but something we're all already living in the present with as a financial instrument.
As for legalization by African countries I am sure that if it's just African countries alone bitcoin doesn't have a problem of acceptance as with all the countries of the African continent you can hardly see any that's with stringent restrictions towards it's citizens on the use of bitcoin and cryptocurrency as a whole unlike in other countries of the world.