To the south and east of this line, the same food may be called a taco, showing a Tex-Mex influence. To the north, barbecue sandwiches are more popular, reflecting the influx of Europeans, European Americans, and African Americans. Most of the Tejanos are concentrated in southern Texas, in historic areas of Spanish colonial settlement and closer to the border that developed. The city of San Antonio is the historic center of Tejano culture; Bexar and Duval counties have some of the historically highest concentrations of Tejanos. Settlers and descendants: