American reserve capacity contrasts with Britain's interrupted pipeline

The United States entered the war with large untapped industrial resources and years of naval demand that Congress had refused to fund. Light-cruiser procurement illustrates the political difference: the US Navy repeatedly asked for more ships, while the Royal Navy secured the Arethusa, Leander, Town, and Dido classes and related designs. Wartime funding could release an American industrial reserve that Britain did not possess in the same form. British shipbuilding was already mature and active, so interrupting its established pipeline removed output and continuity. American mass production was an exceptional case rather than a normal benchmark for every belligerent.