The “glorious work” for United States and Canada in “both the Formative and Golden Ages of the Bahá'í Dispensation”

In the Tablets of the Divine Plan… which may be designated as the Charter of the Plan with which He was to entrust them in the evening of His life, He, in a language still more graphic and in terms more definite than those used by either the Báb or Bahá'u'lláh, revealed the high distinction and the glorious work which America, and particularly the United States and Canada, was to achieve in both the Formative and Golden Ages of the Bahá'í Dispensation. 
- Shoghi Effendi  (From a letter dated June 15, 1946; ‘Messages to America’)