True.
The explanation for this is that Muhammad and his followers were able, with the new religion, to begin the unification of the Arab tribes. Quickly, after the unification of the Arab tribes, Islam, expanded in all directions. In a few decades, it occupied an area of land comparable only to the Roman Empire at its peak. He would soon assume the role of commercial liaison between economically important areas of the world at that time: Europe, Africa and Asia. The military progress achieved by the Muslims allowed them to isolate Europe, blocking trade especially through control of the Mediterranean Sea. For many historians, this accentuated a trend that had existed since the 5th century, geared to agrarian life, and which would lead Europe to feudalism.