The 80th meridian west is a line of longitude that is located 80 degrees west of the Prime Meridian, which is the reference line for longitude at 0 degrees. Meridians run from the North Pole to the South Pole and measure how far east or west a location is from the Prime Meridian. Specifically, the 80th meridian west passes through several regions in North America, including parts of Canada and the United States. In the U.S.
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