entity_id,period_id,confidence,rationale,source_id,review_status ENT_JM_DOV_BER,PER_EARLY_MODERN,high,"Dov Ber of Mezeritch (c.1704-1772), 'the Great Maggid,' chief disciple and successor of the Baal Shem Tov who organized Hasidism into a movement and trained the generation of rebbes who spread it.",SRC_SHIVHEI_BESHT,reviewed