Euro-Americans of Mid-Atlantic society have their ancestral origin from its settlement by Dutch, Swedes, English Catholics and Quakers through to the period of British rule and beyond to the current day. Religious pluralism existed, particularly in Maryland, which was the only Catholic-majority colony of the original Thirteen Colonies. After the American Revolution, the Mid-Atlantic region hosted each of the historic capitals of the United States, including the current federal capital, Washington, D.C. In the early part of the 19th century, New York and Pennsylvania overtook Virginia as the most populous states and the New England states as the country's most important trading and industrial centers. Large numbers of German, Irish, Italian, Jewish, Polish and other immigrants transformed the region, especially coastal cities such as New York City, Newark, Philadelphia and Baltimore, but also interior cities such as Pittsburgh, Rochester, Albany and Buffalo. New York, with its skyscrapers, subways and the Headquarters of the United Nations, emerged in the 20th century as an icon of modernity and American economic and cultural power. By the 21st century, the coastal areas of the Mid-Atlantic were thoroughly urbanized.