What happened in Islam in 595 AD?

The traditional beginning of the Islamic

civilization is associated with the Prophet Muhammed [about AD

570-632]. Arabic became the almost universal language of arts,

sciences, and letters between 750 and 1250. But do not assume that

all the artists, scientists, and writers were Arabs. The builders

of the civilization came from every ethnic group within the ummah.

Although many were Arabized Berbers, Egyptians, Syrians, and Iraqis

whose present-day descendants would call them Arabs, only a few

were wholly descended from Arab tribesmen and "Islamic" is a more

comprehensive term than "Arabic".