For years, the Rio Grande marked the U.S.-Mexican border between El Paso and Juarez. When flooding and other natural processes changed the course of the river, it created land disputes between the neighboring nations that went unresolved for more than 100 years. The Chamizal National Memorial is dedicated to preserving the spirit of cooperation and diplomacy that resulted in the 1963 treaty between the two countries ending the boundary issue. It is one of just two national park sites in the United States that commemorates a peaceful solution to an international boundary dispute.

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