With Mohammed, Islam had — apparently from nowhere — suddenly swept out of Arabia in A.D. 622. Soon it gained dominion all the way from Kazakstan in the East and across North Africa into Spain and France in the West — during the subsequent century. Then, from A.D. 755 to 1000 — it spread all the way from Central Asia right across into Western China.
After the Turks in their homeland Turkmenistan became Moslems — most of them later left and exported Islam into Southern Russia and the Ukraine. Other Moslems later spread Islam right throughout the whole of Northern India, Malaysia, the Western Philippines, and Indonesia. Yet others spread it from North Africa across the Sahara into West Africa, East Africa, and thereafter into Southern Africa.