Many people think byrek was created in Turkey, because that's where wheat was first grown. Of course, wheat is a huge ingredient in byrek for the filo dough.
Maybe you're wondering: "but, Isabel, if it was invented in Turkey... how did it get to all these other countries?" I wondered the same thing! Byrek was a really popular food during the Ottoman Empire (a really long time ago) that was huge! So, while the empire spread and got bigger and bigger, so did the population of people who ate byrek. Can you find out what countries used to be a part of the Ottoman Empire? These are the countries where people still eat byrek today!