Why Koran Arabs preferred over other nations?

Why did you change your name from hassanelagouz ?

The Qur'an didn't say that the Arab are the best among nations, but it says that the offspring of Adam who are all human beings, are honored and preferred to all other creatures of God, God says about this: "We have honored the sons of Adam; provided them with transport on land and sea; given them for sustenance things good and pure; and conferred on them special favors, above a great part of our creation." (Surat Al-Israa', verse 70)