Tell you what, each and every country is trying to Welcome the crypto currencies however, its the local government that is opposing its development whenever they want to do it.
Africa on the other hand is under developed country and it could bless their economic structure with the crypto currencies as it will create inflation in their country and thus can help grow themselves a lot.
Just because of wallets and stuff it doesn't make much difference, what makes differences is real use of it within the country. This surely needs involvement of the government, private and public sectors to make this happen.
For country like Africa, its long road though.