The Eastern African coast of both cultural diversity and alterity invite us to think over the conditions and consequences of the revisiting among various cultures, such as: African, Asiatic, and European, as well as their successive mixture in dealing with their mutual contributions and their deep transformations which ended up in modelling the region of the Indian Ocean, especially in Mozambique. This paper also deals with a type of analysis that involves a debate. In other words, it is related to a dialogue which is meant to reconcile these societies with their common past. Moreover, it is also dealing with creating/ launching some peaceful and solidary basis on both past and future perspectives. On doing so, it is expected to evidence some challenges from our present moment up to the coming future, which is to respect cultural diversities.