"The North."The northern part of Mexico, ir El Norte, including Chihuahua, Coahuila, Durango, Nuevo León, Sonora and Tamaulipas, is the home of most of the foods that the rest of the world considers to be Mexican, including burritos, nachos and fajitas. Northern Mexico is divided from the rest of the country by deserts and marshes, which prevented the Azrtecs moving this far north. The sparsity of good arable or farming land meant that the indigenous people were mainly nomadic, searching for food where they could find it and taking their flocks with them. Roast goat is a popular dish as is roast beef. Baja California and Baja California Sur in the north west differ from the rest of Northern Mexico as the peninsula is fertile, with an almost Mediterranean climate, and much of the food comes from the sea in the form of fish and shellfish. It was nto until the 16th Century that migrants from other areas of Mexico began to arrive, bringing their appetites with them.