Most people have legitimate and fair reservations against globalization, yet most of them do recognize its positive aspects. These include, but are not limited to the dissemination of knowledge and information as well as cultural and scientific cross fertilization.
Early Muslims used the Arabic language for that very purpose. Great scholars, whose contributions to the course of science and civilization are beyond denial, used Arabic as a tool for communication with people of other linguistic, cultural, ethnic, racial, and religious backgrounds.
Among other famous Muslim scholars are Averroes from Andalusia (the medieval name for the Iberian Peninsula), Avicenna from Uzbekistan, and al-Farabi from Turkistan.
They were physicians, philosophers, and/or jurists who felt that writing in their own language would make their knowledge only accessible to their own countrymen, whereas writing in Arabic would make it widely available for many scholars and students from various nations ranging from China in the East to Andalusia in the West.
No other language was a larger vehicle for the transmission of knowledge at that time.