Give the contribution of Abu Assafa the first Abbasid Caliph.

Contribution of Abu Assafa of the Abbasids.

1. Founded the Abbasid dynasty
2. defeated the Umayyad
3. defeated the opposition
4. Brought peace in the empire due to his ruthlessness
5. Expanded the empire
6. brought law & order in the empire
7. Abbasids success was built on the foundation he laid

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