The foundation of the Kingdom of Hungary was officially marked by the coronation of Stephen I, also known as Saint Stephen, on Christmas Day. The event took place in Esztergom, a city that would later become the religious heart of Hungary. Stephen was crowned king by the legates of Pope Sylvester II, who recognized his authority and the Christianization of the region. This act not only granted legitimacy to Stephen's rule but also affirmed Hungary’s new role as a player on the European stage as a Christian kingdom. Stephen, who had spent years consolidating his power and promoting Christianity, implemented various reforms to align the kingdom more closely with Western European norms. These included the establishment of ecclesiastical institutions and the introduction of a feudal system that would help stabilize the kingdom economically and socially.

The importance of this event extends beyond mere political recognition; it represented a shift from pagan beliefs to a structured Christian governance, entrenching the Church’s influence in Hungarian society. Stephen I's dedication to spreading Christianity built a foundation for future kings to follow, shaping Hungarian culture and identity for centuries. As Christianity took root, it also fostered connections with other European powers and facilitated trade, culture, and diplomacy. This moment in 1000 laid the groundwork for the Kingdom of Hungary, which would go on to flourish and expand its boundaries in the following centuries, creating a lasting legacy in Central Europe.

Stephen's reign is credited with unifying the diverse tribes within Hungary and creating a distinct Hungarian identity. His canonization as a saint reflected his legacy, as he became a symbol of the country's birth and cultural integration into Europe. Policies initiated by Stephen established a royal court, restructured territories, and created laws that would govern the newly formed Christian community. This early foundation would influence Hungarian governance and societal structures well into the future, making it a critical juncture in the history of the region.