Get Countries with Regions

{
    "data": [
        {
            "type": "country",
            "id": "AT",
            "attributes": {
                "code": "AT",
                "name": "Austria",
                "regions": [
                    {
                        "code": "AT11",
                        "name": "Burgenland"
                    },
                    {
                        "code": "AT12",
                        "name": "Lower Austria"
                    },
                    {
                        "code": "AT13",
                        "name": "Vienna"
                    }
                ]
            }
        },
        {
            "type": "country",
            "id": "DE",
            "attributes": {
                "code": "DE",
                "name": "Germany",
                "regions": [
                    {
                        "code": "DE1",
                        "name": "Baden-Württemberg"
                    },
                    {
                        "code": "DE2",
                        "name": "Bavaria"
                    },
                    {
                        "code": "DE3",
                        "name": "Berlin"
                    }
                ]
            }
        },
        {
            "type": "country",
            "id": "US",
            "attributes": {
                "code": "US",
                "name": "United States",
                "regions": [
                    {
                        "code": "US_AK",
                        "name": "Alaska"
                    },
                    {
                        "code": "US_AL",
                        "name": "Alabama"
                    },
                    {
                        "code": "US_AR",
                        "name": "Arkansas"
                    }
                ]
            }
        }
    ],
    "meta": {
        "request_id": "cf054205-dd8c-4473-8689-07c30fe0789f"
    }
}