Muhammad was sent to an Eastern nation.

The Bab arose in the Eastern land of Persia.

Baha'u'llah lived and taught in the East.

All the great spiritual teachers arose in the Eastern world.
But although the Sun of Christ dawned in the East, the radiance thereof was apparent in the West, where the effulgence of its glory was more clearly seen.

The divine light of His teaching shone with a greater force in the Western world, where it has made more rapid headway than in the land of its birth.
In these days the East is in need of material progress and the West is in need of a spiritual ideal.