In 833 AD, this became the state of Great Moravia with the conquest of the Principality of Nitra (present-day Slovakia).

"Results": [
    {
        "TypeName": "LOC",
        "Text": "Great Moravia",
        "Start": 36,
        "End": 49
    },
    {
        "TypeName": "LOC",
        "Text": "Principality of Nitra",
        "Start": 75,
        "End": 96
    },
    {
        "TypeName": "LOC",
        "Text": "Slovakia",
        "Start": 110,
        "End": 118
    }
]