In African countries, I am a little hesitant because there are so many cases like ICOs that fail and there are many other cases that use cryptocurrency, so in Africa it is not necessarily a good place for cryptocurrency so you should stay alert when saving your cryptocurrency.
The place of country is not important to save your crypto currencies because all uses same place to store your cryptos only the wallets are differ.But maybe Africa is not a best place to spend cryptos since they are one of the mosr poorest country so they are struggling for their daily life too.