What was the impact of Islam on Arabs religiously, politically, and socially?

Islam is the religion of Allah, which elevates those who adhere to it in this world and the Hereafter, and those who turn away from it lose. A complete transformation is observed in the lives of Arabs before and after Islam; they changed from worshipping idols to worshipping the Most Merciful, from ruling by tyranny to ruling by Sharia, and from discord to harmony. After they were followers of other nations (Persians, Abyssinians, or Romans), they became leaders of the world, governing it with religion, and people enjoyed justice and tranquility. When Islam declined, injustice and tyranny returned, and one can refer to the book "What Did the World Lose by the Decline of Muslims" by Abu al-Hasan al-Nadwi.