The United States originally used horse-powered machinery to power its earliest factories, but eventually switched to water power. As a result, industrialisation was essentially limited to New England and the rest of Northeastern United states, which has fast-moving rivers. The newer water-powered production lines proved more economical than horse-drawn production. However, raw materials came from the Southern United States. It was not until after the Civil War in the 1860s that steam-powered manufacturing overtook water-powered manufacturing, allowing the industry to fully spread across the nation.