It seems you may be referring to the Muslim conquests that occurred during the early medieval period, particularly during the 7th to 8th centuries. The Islamic expansion began in the Arabian Peninsula and led to the establishment of a vast empire that spread across North Africa and into parts of Europe.
One notable point of entry into Europe was through the Iberian Peninsula (modern-day Spain and Portugal), where the Umayyad Caliphate conquered large territories starting in 711 CE. This invasion led to the establishment of Al-Andalus, a region that became known for its cultural, scientific, and architectural achievements.
Another significant event was the Battle of Tours in 732 CE in what is now France, where Frankish leader Charles Martel halted the advance of Muslim forces into Western Europe. This battle is often cited as a pivotal moment in European history, as it marked the limit of Muslim expansion into the continent.
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