 Immigration centered in a number of major American cities of the East and Midwest, including St. Louis, Chicago, Cincinnati, Milwaukee, Philadelphia, and New York City — urban areas which retained this Germanic influence for many decades, or in some cases, for generations.A second mass wave of emigration from Germany to America began in 1866, following the conclusion of the American Civil War and running until the economic collapse associated with the Panic of 1873.During this second flurry of departures more than a million more Germans were added to the population of the United States.