At the height of its splendour mass migration to ancient Egypt (Khemet) for its
classical civilisation and technological advancement, appealed to many fair
skinned neighbouring nations who were in awe of its status. This mass
migration has been well documented and is evidenced by the obvious presence
of Indo-Aryans who call themselves Egyptian nationals today..
Arabia on the other was not so technologically advanced but nonetheless
became a magnet for a variety of ethnicities to migrate/make Hijra to because
of the enlightening, monotheistic, unifying message of Islam believed by all
Muslims to be the final Revelation from God to Humanity.
These migrants for the most part came from Persia, Turkey, Armenia, India
(Sind) and the Caucus mountains region. They too were Indo-Aryans.
During The Prophets lifetime, the Muslim ummah (community) was established
in Jazirat al Arab (Arabia) by way of their conversion or allegiance to Islam.