Crowds gather in Hoboken, New Jersey, in 1908 as William Gibbs McAdoo presides over the opening of the New York–New Jersey tunnel, a major milestone in regional transportation. The project, developed by the Hudson and Manhattan Railroad, improved access between the two states and helped accommodate the growing flow of commuters and commerce. Public ceremonies like this marked the expansion of modern infrastructure, reflecting the era’s emphasis on engineering progress and the increasing connectivity of American cities.