Although Dallas and Fort Worth are the ninth and 16th largest cities in the US respectively, the 12 county area that comprises the DFW Metroplex is the fourth largest metropolitan area in the United States (after Chicago, Los Angeles, and New York City) with a population of 6,426,214 according to the 2010 US Census.
All beer is created with yeast, but there are filtration processes that can remove yeast from the final product. All domestic beer in the United States such as Budweiser is yeast-free by law.
As hops began to pervade breweries, however, this distinction between beer and ale no longer applied. Brewers began to differentiate between beer and ale on the basis of where the yeast fermented in the cask: ale uses yeast that gathers on the top, and lager uses yeast that ferments on the bottom.