Well not in many other countries exist one way or another many forms of empanadas with different names anyway Indians make the oldest of all Samosa meat or vegetarian versions and they suppose to have invented it It's only the filling that more often changes but it is basically the same principle and instead of adobe oven some may use tandir or tandoori ovens like The Uzbeks, Khazaks and Kirgiz make Samsas Mongolian and Siberian Russians make Ku'shuurs Tartars of Crimea and Caucasian peoples make Chebureki or even the shallow fried versions of Piroshkies or pierogies (pir means fried) in a number of shapes (meat,eggs,onions,mushrooms) from Poland, Ukraine, Russia. Perhaps and because Argentinean empanadas are associated with pizzerias in Buenos Aires and cold weather they have become better known in other parts as Argentineans. Even Italian and Lebanese if they fold the leavened bread in two they call it calzoni (sorry don't know its Arabic name)