As wheat flour and baking powder/baking soda became available in the late 19th century, buttermilk biscuits became popular. Today, buttermilk biscuits and sausage gravy are the classic Appalachian breakfast; they are also a common breakfast everywhere where Appalachian people have emigrated. Both North Carolina and West Virginia have statewide biscuit chain restaurants; many Southern or originally-Southern chains offer biscuits and gravy, and when McDonald's introduced a new breakfast menu selling either Egg McMuffins (with English muffins) or a variant with biscuits, the biscuit zone was practically a map of the South with the exception of Virginia, Maryland, and Florida.