Islam's Spread and the Decline of Aksum

The expansion of Islam across North Africa and the Middle East (7th–8th centuries) critically weakened the Kingdom of Aksum (Axum) by:

• Disrupting Red Sea Trade: Muslim caliphates (Umayyad, Abbasid) gained control of key ports (Adulis, Massawa) and maritime routes, diverting commerce from Aksumite hands.
• Blocking Indian Ocean Access: Islamic dominance of the western Indian Ocean severed Aksum's direct links to its lucrative trade with India, Ceylon, and Southeast Asia (ivory, gold, frankincense, myrrh, slaves).
• Economic Strangulation: Loss of customs revenue and export markets caused fiscal collapse, undermining the state's ability to maintain its military, infrastructure, and monumental building programs.
• Political Isolation: Aksum became a Christian enclave cut off from Byzantium and Mediterranean Christendom.

The kingdom contracted to its highland core, eventually fragmenting. The rise of the Zagwe dynasty (c. 1137) marked the end of classical Aksum.