Following the American Revolutionary War, the United States forced the Iroquois nations to cede most of their lands in that region, as most of them had allied with the British, who were defeated. In addition, demand from settlers created pressure for such cessions. White settlers improved the natural waterway by constructing a canal with locks within Wood Creek to Oneida Lake. This system was significantly improved—from 1792 to 1803—by cutting a canal across the Oneida Carry, after which commercial shipping across Oneida Lake increased substantially.