The First Kingdom of Greece is declared in the London Conference.

The Kingdom of Greece was the Greek nation-state established in 1832 and was the successor state to the First Hellenic Republic. It was internationally recognised by the Treaty of Constantinople, where Greece also secured its full independence from the Ottoman Empire after nearly four centuries. It remained a Kingdom until 1924, when the Second Hellenic Republic was proclaimed, and from the Republic's collapse in 1935 to its dissolution by the Regime of the Colonels in 1973. A referendum following the regime's collapse in 1974 confirmed the effective dissolution of the monarchy and the creation of the Third Hellenic Republic. For much of its existence, the Kingdom's main ideological goal was the Megali Idea, which sought to annex lands with predominately Greek populations.

The London Conference of 1832 was an international conference convened to establish a stable government in Greece. Negotiations among the three Great Powers resulted in the establishment of the Kingdom of Greece under a Bavarian prince. The decisions were ratified in the Treaty of Constantinople later that year. The treaty followed the Akkerman Convention which had previously recognized another territorial change in the Balkans, the suzerainty of the Principality of Serbia.