But whereas the U.S. economy, more dynamic and unhampered by a large internal debt, was quickly able to bounce back from the recession, Britain remained stuck. The number of unemployed would not fall below one million for the next twenty years. It soon became apparent that Britain had sustained terrible damage as an economic power during the war. Industries such as cotton, coal, and shipbuilding, in which it had once led the world, had failed to modernize and the traditional markets had been lost to competitors. Labor costs had risen as unions negotiated shorter working hours.