What do you mean by the term abbasied revolution

Dear Student,
Answer to your question is as follows :

The Abbasid Revolution was the first major military political upheaval in the Muslim world.
This revolution was led by the Abbasid dynasty against the Umayyad dynasty in 750 AD.
The main reasons that led to the revolution are:

• Promises made by the Abbasids to restore the Tawhidic civilization as formulated by the founder of Islam Muhammad

• The extreme desire to end all oppressions of the dissident groups like those inflicted by the Umayyads

Such an image of different Arabs as portrayed by the Abbasids helped them to win huge support of the masses. To make such promises a reality, a revolution under the Abbasid leader Abu Muslim was raised in 747 AD. The revolution reached its climax in the war of Zab (750 AD), which gave the final blow to the Umayyad hegemony. This revolution sealed the fate of the Umayyads in the Arab region and paved the way for the dissemination of Iranian culture.

Regards