The 100th meridian west is a line of longitude that is located 100 degrees west of the Prime Meridian, which is the line of longitude defined as 0 degrees. The 100th meridian west runs from the North Pole to the South Pole and passes through several U.S. states, including Montana, Wyoming, Colorado, Nebraska, and Texas. Historically, the 100th meridian west has been significant in various contexts, particularly in relation to agriculture and climatology.
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