 የሙስሊሙንና የምእራቡን ዓለም ግንኙነት አስመልክቶ በዚሁ ዘመን ትልቅ ክስተት የነበረው በጳጳሱ የታወጀውና በበርካታ የአውሮፓ ነገስታት ድጋፍ ያገኘው ተከታታይ የመስቀል ጦርነት ነበር።
The most important event in this area as far as the relation between Islam and the Western world was concerned was the series of Crusades declared by the Pope and espoused by various European kings.