Look at this unabashed moron. 
This nigga really went out of his way to search for a source, plagiarize it and display it with the shamelessness of a star. He copy and pastes something yet has the nerve to tell me to read it as if he actually did.
What you just plagiarized mentions proto-civilization when the world was Pangaea you imbecile, hence, the belt the passage it refers to.
It's common knowledge that Arabs originated in Yemen. No one's arguing that there has been some admixture with other peoples. I just find it amazing how someone can be so confident in ignorance. Indha adheygiisa, kulaha bedouins are a separate ethnic group and not the same as other Arabs.
He said it with so much confidence as well.
He is the dumbest nigga I've seen on the forum so far, unparalleled in ignorance. He thinks anyone Semitic is an Arab. There are two branches of the Arabs, Adnan and Qahtan, Arabs are descendants of Ismail (AS) son of Ibrahim (AS). Some people say Qahtan (mostly South Arabians) are not descendants of Ismail (AS) and this is just a myth created during the Umayyad dynasty. DNA test shows all Arabs to be J1c3d, even large percentages of the Jewish Cohan (progeny of Aaron AS) have J1c3d, they are the offspring of Ishaaq (AS) son of Ibrahim (AS). He describes real Arabs in a way that you would think they are jet black, when they are predominantly brown, some olive skinned and some dark brown like the man in my picture (he's a pure Qurayshite from Makkah). Bedouin is just referred to someone who preferred to live in the desert instead of city side. All Arabs come from the same origins. Ignore the monkey.