Out of curiosity, how do Muslims reconcile the fact that everything blessed is located in Arabia? God sent this prophet to Arabia, speaking Arabic, praying to this Qibla in Arabia, traditional Arab medicine (hijama) is recommended, Arabian water (zamzam) is blessed, Hajj pilgrimage is to Arabia, etc. Certainly if the world is created by God and is so large, why isn't anything blessed located in, for example, South America or China? Why is the final religion so Arab-centric?