The Baha'i Dispensation is divided into three Ages: the Heroic, Formative, and Golden Ages. The Heroic Age, also called the Apostolic or Primitive Age, began in 1844 with the Declaration of the Báb and spanned the ministries of the Báb (1844-53), Bahá'u'lláh (1852-92), and 'Abdu'l-Bahá (1892-1921). The transitional event most often identified with the end of the Heroic Age and the beginning of the Formative Age is the passing of 'Abdu'l-Bahá in 1921. The Formative Age, also known as the Age of Transition or the Iron Age, began in 1921 when Shoghi Effendi, according to instructions in 'Abdu'l-Bahá's Will and Testament, became the Guardian of the Cause of God and began to build Bahá'u'lláh's Administrative Order. The Formative Age is the second and current Age; it is to be followed by the third and final Age, the Golden Age destined to witness the proclamation of the Most Great Peace and the establishment of the Baha'i World Commonwealth. "The emergence of a world community, the consciousness of world citizenship, the founding of a world civilization and culture," Shoghi Effendi wrote, "- all of which must synchronize with the initial stages in the unfoldment of the Golden Age of the Bahá’i Era - should, by their very nature, be regarded, as far as this planetary life is concerned, as the furthermost limits in the organization of human society, though man, as an individual, will, nay must indeed as a result of such a consummation, continue indefinitely to progress and develop."