The big influence on how beer developed in the United States was Prohibition. For thirteen years it was illegal to brew or consume beer. Most of the smaller brewers went out of business, with only the largest able to weather the storm by producing root beer, ginger beer and other items. When beer production geared up after the 21st Amendment was passed, it was no longer a predominantly local affair. The surviving brewers now had to appeal to a wide clientele, not just the tastes of the drinkers in their city, so the beers post-Prohibition were geared to theoretically appeal to everyone. A style that we now refer to as Vienna Lager may have been representative of the pre-Prohibition beers. Vienna, now in Austria, was home to many German-speaking brewers who emigrated to North America, including Mexico. Representatives of this style include Samuel Adams Boston Lager, Yuengling, Negra Modelo and Bohemía. Post-Prohibition lagers were brewed with a lower hop profile and what many refer to as a least-common-denominator flavor, not only to appeal to the largest segment of the population, but to appeal to women as well.
None if this is to suggest that mass-produced beers taste bad, it's just that they don't vary much from one to another and the flavor is overly processed - think your run-of-the-mill white bread or a McDonald's hamburger - okay, but nothing special. Until recent years there wasn't much to choose from outside of the giants: Budweiser, Miller, Coors etc were all pretty similar, the only variety one might find in most markets came from the imports: Guinness Stout (for the adventurous), Heinekin and Lowenbrau were the ones that I recall from my youth. In the next installment, we'll look at those "classic" imports