"Gadsden Purchase" meaning in English

{
  "etymology_text": "Named after James Gadsden, U.S. ambassador to Mexico.",
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    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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        {
          "kind": "place",
          "langcode": "en",
          "name": "Arizona, USA",
          "orig": "en:Arizona, USA",
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          "langcode": "en",
          "name": "Historical events",
          "orig": "en:Historical events",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "History of the United States",
          "orig": "en:History of the United States",
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        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Mexico",
          "orig": "en:Mexico",
          "parents": [
            "Central America",
            "North America",
            "America",
            "Earth",
            "Nature",
            "All topics",
            "Fundamental"
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        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "New Mexico, USA",
          "orig": "en:New Mexico, USA",
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            "North America",
            "America",
            "Earth",
            "Nature",
            "All topics",
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        }
      ],
      "glosses": [
        "A region of present-day southern Arizona and southwestern New Mexico that the United States acquired from Mexico by the Treaty of Mesilla in 1854."
      ],
      "id": "en-Gadsden_Purchase-en-name-SdBRAJ~D",
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        [
          "New Mexico",
          "New Mexico"
        ],
        [
          "United States",
          "United States"
        ],
        [
          "Mexico",
          "Mexico"
        ]
      ]
    }
  ],
  "word": "Gadsden Purchase"
}

{
  "etymology_text": "Named after James Gadsden, U.S. ambassador to Mexico.",
  "forms": [
    {
      "form": "the Gadsden Purchase",
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    }
  ],
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  "lang_code": "en",
  "pos": "name",
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      ],
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          "Arizona",
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        ],
        [
          "New Mexico",
          "New Mexico"
        ],
        [
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          "United States"
        ],
        [
          "Mexico",
          "Mexico"
        ]
      ]
    }
  ],
  "word": "Gadsden Purchase"
}