May 10

The reason for the appearance of a Manifestation of God in a given place is not to honor a particular people or nation. Shoghi Effendi indicates a quite different reason in The Advent of Divine Justice and, more concisely, in a letter to an individual written on his behalf on 23 January 1944:

The ever-recurring miracle in the establishment of every religion is that such poor instruments accomplish the work of God. It is to demonstrate the fact that God is the power that overcomes every obstacle, and that Revelations are divine in origin, that leads Him to always choose the worst people among whom to manifest His Messenger and the most obscure and helpless of the population―relatively speaking―to establish the foundations of His Faith. The Bahá’í Dispensation is no exception to this rule, as you yourself have observed. 
- The Universal House of Justice  (From a letter dated 27 October 1986, written on behalf of the Universal House of justice to an individual believer; ‘Messages from the Universal House of Justice 1986-2001’)