We know that the Arabs came from Saudi Arabia to invade the Middle East, and convert its population by force to Islam. The reality that most of North Africa (Egypt, Libya, Tunisia, Algeria, Morocco; and Iraq/Syria/Lebanon are not Arabs. A few Arabs from Arabia had overtaken all these countries. Let that be a lesson to other cultures like India, China, Russia, and the USA. We all can be wearing rags on our heads soon? The only exception is JAPAN! Ain't no MF Moslem going to immigrate, or even get accepted to open a shop in there!
To be precise, many Arabs were Christian long before Islam. They lived in today Syria, parts of Israel/Palestine and Lebanon. The most famous Arab Christian was Saint John of Damascus, and there was a Roman Emperor of Arab origin - Philip the Arab.