"III Región" meaning in Spanish

{
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    {
      "args": {
        "1": "es",
        "2": "III",
        "3": "Región"
      },
      "expansion": "III + Región",
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    }
  ],
  "etymology_text": "III + Región",
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      "expansion": "III Región ?",
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    {
      "args": {},
      "expansion": "III Región ?",
      "name": "es-proper noun"
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  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
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    {
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          "kind": "other",
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          "source": "w"
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        {
          "kind": "other",
          "name": "Spanish terms with 3 consecutive instances of the same letter",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "History of Chile",
          "orig": "es:History of Chile",
          "parents": [
            "Chile",
            "History of South America",
            "South America",
            "History",
            "America",
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            "Fundamental",
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          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "es",
          "name": "Regions of Chile",
          "orig": "es:Regions of Chile",
          "parents": [
            "Regions",
            "Places",
            "Political subdivisions",
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            "Polities",
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            "Proper nouns",
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            "Fundamental",
            "Nouns",
            "Lemmas"
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          "source": "w"
        }
      ],
      "glosses": [
        "Former name of the Atacama region in Chile."
      ],
      "id": "en-III_Región-es-name-dvNN7I3f",
      "links": [
        [
          "Atacama",
          "Atacama"
        ],
        [
          "Chile",
          "Chile"
        ]
      ],
      "raw_glosses": [
        "(historical) Former name of the Atacama region in Chile."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "III Región"
}

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  "etymology_templates": [
    {
      "args": {
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        "2": "III",
        "3": "Región"
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      "expansion": "III + Región",
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  ],
  "etymology_text": "III + Región",
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    {
      "args": {
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      "expansion": "III Región ?",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "III Región ?",
      "name": "es-proper noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "name",
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        "es:History of Chile",
        "es:Regions of Chile"
      ],
      "glosses": [
        "Former name of the Atacama region in Chile."
      ],
      "links": [
        [
          "Atacama",
          "Atacama"
        ],
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          "Chile",
          "Chile"
        ]
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      "raw_glosses": [
        "(historical) Former name of the Atacama region in Chile."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "III Región"
}