The Abbasid dynasty established their caliphate in Baghdad, which became the capital in 762 CE. The choice of Baghdad was strategic, as it was located at the crossroads of trade routes and offered a central position in the Islamic world. Under the Abbasids, the caliphate flourished culturally, scientifically, and economically, marking a golden age of Islamic civilization.
The Abbasid dynasty
Abbasid Caliphate was created in 750.
Abbasid Caliphate.
Abbasid caliphate -- Baghdad Ummayyad Caliphate- Cordoba
Abbasids is the Muslim group overthrew the Umayyad dynasty and set up a new caliphate.
Damascus was the capital of the Uymmad Caliphate, the caliphate before the Abbasid one. The first capital of the Abbasid Caliphate was Kufa, then Baghdad, then Samarra, and then Baghdad once more (all four cities located in Iraq).
The last Abbasid caliph was Al-Mustakfi Billah, who ruled from 1517 until the fall of the Abbasid Caliphate after the Ottoman conquest of Baghdad. Following this event, the Abbasid title continued in a nominal sense under Ottoman protection, but the political power of the caliphate effectively ended. The Abbasid lineage persists in a cultural and historical context, but Al-Mustakfi is generally recognized as the final caliph of the Abbasid dynasty.
before
Harun Al Rashid
The first Caliph Abou Bakr, then Omar. then Othman, then Aly
The Abbasid Caliphate did not directly expand into Spain; instead, it was the Umayyad Caliphate that established control over the Iberian Peninsula in the early 8th century. After the Umayyad dynasty was overthrown in the East, a surviving member, Abd al-Rahman I, fled to Spain and established an independent Umayyad emirate in Córdoba. The Abbasids, while they did not rule Spain, had a significant cultural and intellectual influence on the region through their connections with the Umayyad rulers.
The Muslim Empire established by second Rashidoon Caliph Hazrat Umar RAU, the Ummayad Caliphate, The Abbasid Caliphate in Baghdad, and the Ummayad Caliphate in Spain