Al-Saffah vs Taspar Qaghan

Al-Saffah was proclaimed the first Abbasid caliph in Kufa after the Abbasid Revolution overthrew the Umayyads. His title 'al-Saffah' means 'the Shedder of Blood', reflecting the violent transition.

Al-Saffah ordered the systematic elimination of the Umayyad family to prevent any restoration. Most Umayyad princes were killed, though one, Abd al-Rahman I, escaped to Spain and founded the Emirate of Cordoba.

Al-Saffah established the Abbasid Caliphate, moving the capital from Damascus to a new city near Kufa. This shift marked the beginning of a new era in Islamic history, with a focus on Persian influence and Baghdad.

Taspar Qaghan succeeded his brother Muqan Qaghan as the fourth ruler of the First Turkic Khaganate. His reign marked the peak of the khaganate's power and territorial extent in Central Asia.

Taspar Qaghan converted to Buddhism and declared it the state religion of the Turkic Khaganate. He built monasteries and invited Buddhist monks from China, promoting the spread of Buddhism among the Turkic elite and along the Silk Road.

Taspar Qaghan maintained diplomatic relations with the Byzantine Empire, continuing the alliance initiated by his predecessors against the Sasanian Empire. This alliance facilitated trade and military cooperation between the two empires.

Taspar Qaghan died, leading to a succession crisis that split the First Turkic Khaganate into Eastern and Western halves. His death marked the end of the united khaganate and the beginning of internal conflicts.