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.
Bitcoin is already legalized in some Africa countries. I don't know the country that you are from, but my country has legalized the used of cryptocurrency, and Nigeria has the highest number of crypto daily users and adopters.
Nigeria, South Africa, Morocco, Ghana and Kenya and many more countries in Africa that bitcoin is legalized. It is not compulsory that the government must use it as a legal tender before, bitcoin can be used or is legal.
Bitcoin has already become dominant in most African countries, having Nigeria as the leading country when it comes to bitcoin ownership. Because of this, it would not be surprising anymore if the rest of African countries will legalize bitcoin as well in the future. However, using bitcoin as a legal tender is still not put into practice, but I think the most important thing is they come to legalize bitcoin already.