Asalaamu alaikum my brothers and sisters.
This is a question that never leaves my mind and, unfortunately, somewhat affects my Imaan. Because until I find a satisfying answer, I'm afraid my faith will not be complete the way I want it to be. There are in access of 5 billion people in the world living right now as we speak. Many of them are not even civilized enough to cover their bodies with clothes let alone research about Islam or read the Quran and Sunnah!! What happens to these people. Please understand that I'm not asking this question to raise doubt amongst you. I'm asking this question and seeking help and hopefully others will also benefit from the answers that arise.