In the late 19th century, rails from Bethlehem Steel helped build the United States into the world's foremost economy. During the 1890s, Bethlehem became America's leading supplier of heavy armaments, and by 1914, it had pioneered new methods of structural steel manufacture that transformed urban skylines. Demand for its war materials during World War I provided the finance for Bethlehem to become the world's second-largest steel maker. As late as...