Tabaristan or Tapuria was the historic name of the former region located in the southern coasts (littoral areas) of the Caspian Sea, roughly in the location of the northern and southern slopes of the Elburz range in Iran. The region roughly corresponded to the modern Iranian provinces of Gilan, Mazandaran, Golestan and northern Semnan.
Bahá'u'lláh taught that humanity is one single race and that the age has come for its unification in a global society. His claim to divine revelation resulted in persecution and imprisonment by the Persian and Ottoman authorities, and his eventual 24-year confinement in the prison city of `Akka, Palestine (present day Israel), where he died. He wrote many religious works, most notably the Kitáb-i-Aqdas and the Kitáb-i-Íqán.
There are two known photographs of Bahá'u'lláh. Outside of pilgrimage, Bahá'ís prefer not to view his photo in public, or even to display it in their private homes. Bahá'u'lláh was Mazandarani and his familly was Nori.