With all due respect I am Ghanaian approx 3/4 to be exact and as such am more familiar with the workings of my Country than yourself.
Indeed Ghana became a republic during 1957, thereafter obtaining independance from the former British Empire. However, we Ghanaians did not renounce our Monarchy. The republic only refers to the fact that we are an Autonomous nation and govern ourselves without external autonomous influence (irrespective of UN and G8 membership.)
Therafter obtaining independance we adopted a dual system of governance in order to appease Ghanaians and those who accused us of not being 'civilized' enough. Hence We have a Government and Monarchy. Therefore we are governed by a political system but ruled by a Multi-regional/Tribal Monarchial system with The Assantehene as supreme Monarch.
Finally, as I recall my post merely stated the languages that The Assante speaks (The Assante: Ghanaian personal reference to the King.) There was no need to dispute as to whether or not you believe there is a King of Ghana. Then later to attempt to 'educate' a Ghanaian about their country.
Bireampoma China Iman-Roshanah Osei