"САД" meaning in Serbo-Croatian

{
  "forms": [
    {
      "form": "SAD",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "p"
      },
      "expansion": "САД ? (Latin spelling SAD)",
      "name": "sh-proper noun"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Serbo-Croatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "sh",
          "name": "Countries",
          "orig": "sh:Countries",
          "parents": [
            "Polities",
            "Places",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "sh",
          "name": "Countries in North America",
          "orig": "sh:Countries in North America",
          "parents": [
            "Countries",
            "Places",
            "North America",
            "Polities",
            "Names",
            "America",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Earth",
            "Fundamental",
            "Nouns",
            "Nature",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "USA (a country in North America)"
      ],
      "id": "en-САД-sh-name-0kEFOjt-",
      "links": [
        [
          "USA",
          "USA#English"
        ],
        [
          "North America",
          "North America#English"
        ]
      ]
    }
  ],
  "word": "САД"
}

{
  "forms": [
    {
      "form": "SAD",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "p"
      },
      "expansion": "САД ? (Latin spelling SAD)",
      "name": "sh-proper noun"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Requests for gender in Serbo-Croatian entries",
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian initialisms",
        "Serbo-Croatian lemmas",
        "Serbo-Croatian proper nouns",
        "sh:Countries",
        "sh:Countries in North America"
      ],
      "glosses": [
        "USA (a country in North America)"
      ],
      "links": [
        [
          "USA",
          "USA#English"
        ],
        [
          "North America",
          "North America#English"
        ]
      ]
    }
  ],
  "word": "САД"
}