Who is razi plss elaborate it

Al Razi is considered the “original portrayer” of smallpox. While serving as the Chief Physician in Baghdad, he was the first to describe smallpox and to differentiate it from measles. He wrote a treatise on the subject: “Kitab al Judari wa al Hasbah”. This book was translated more than dozen times into Latin.

possible the invasion of room could have been avodiable but the people of rome were to stubboron and to wealthy the kingdoms saw them as a threat if they dialred it downa   bit ten i dont think they wouldnt failed   china was not iacvvdoaible they caused war to much and were out of hand therefor that must have happened india i dont really know it could of