The forces of capitalism and democracy in New York come to a stunning crescendo, as the city's tremendous industrial engine draws in people from around the world tripling New York's population in less than a single lifetime. Transformed by their experience in the new world, the immigrants in turn transform the city in extraordinary ways physically, culturally, and, in the end, politically. Additional topics included are building of the subway system, Grand Central Station, Wall Street, skyscraper, and Triangle Shirtwaist Factory Fire. .