As we know 751 was a further confirmation of the han/tang policies on central Asia, and would lead to the the Chinese Invasion of Afghanistan a few decades later. While this first expansion was short lived it was monumental in bringing sinto civilization outside of the far east and into the different parts of the world,
While the sources are not very clear on the battle it's self what the would the world look like with a powerful greater Abssib Caliphate they could have perhaps become the leading nation of Eurasia in the 8th-9th centuries.
Will the battle of Talas do anything to stop the growth of greater China or is that inevitable?