Confronting Islam: Emperors Versus Caliphs (641–c. 850)
Level 5 - mechanism / opinion, no new human data
Level 5 by design analogy, as this is a narrative historical review without empirical clinical data.
OpenAlex W2497291335 · doi:10.1017/chol9780521832311.016
What was done
This historical narrative review examined the political and military relations between the Byzantine Empire and the early Islamic caliphates from 641 to approximately 850, analyzing historical records regarding the interaction between domestic conflicts, military campaigns, and diplomatic developments.
What was found
No quantitative statistical measurements are presented. Historically, Arab expansion against Byzantium following the 630s proceeded in four distinct phases, each halted by internal Muslim civil wars (fitna): 656–661, 683–692, 718–720 (followed by approximately 20 years of campaigns), and the mid-eighth-century Abbasid revolution. Following the 636 Battle of Yarmuk and the 641 succession crisis, Byzantium used these intervals of internal caliphal division to regroup and establish new defensive lines in Anatolia across the Taurus mountains.
Why it matters
The analysis outlines how recurring internal civil wars within the early caliphates directly enabled the Byzantine Empire to reorganize its defenses and avoid total conquest after the initial loss of its eastern provinces.
Limits
This is a narrative historical analysis rather than an empirical or systematic study. No quantitative data or explicit methodology for primary source selection is reported in the abstract.
Cited by
- supports The Arab conquest of Byzantine territories in the Levant took place over roughly a decade in the 630s.