99 percent of Indonesia, which is an Asian country, is Muslim. Many Muslims elsewhere, too, are Asian. It's a religion just like Christianity or Buddhism. The man obviously could tell these women were Muslim because they were wearing the suppressive head covers. They could have had pale skin and blue eyes for all we know, but it's the head covers (and sometimes the body clothes) that give it away. Oddly, some Muslim women wear only the head scarves but very Western clothes, while others are attired from head to toe in suppressive wraps. It's sad how they are taught to shield what could be very beautiful hair from the public.