Did not know this about the CFA franc currency:

…established in 1945, the CFA franc is used in two African monetary zones, one for eight west African countries and the other for six mostly petro-states in central Africa. Since 1999, it has been pegged to the euro, giving the member states monetary stability while supporting trade with Europe.

In return, the members have to keep half of their foreign reserves in France, on which the French treasury pays 0.75 per cent interest.

A French official sits on the board of the regional central bank in both zones, and the currency is printed by France.

Emmanuel Macron signals rethink on French-backed Africa currency

Apparently things are changing because Macron the French President thinks it’s anachronistic and also because

“The optics are so bad I don’t think it is sustainable for France to continue this arrangement,” the adviser said. “There is such a strong demand from African youth to take back their monetary independence.”