Leopold V of Austria negotiates the Georgenberg Pact with Ottokar IV of Styria on August 17, 1186, by which Styria and the central part of Upper Austria are to be amalgamated into the Duchy of Austria after 1192.

This is the first step towards the creation of modern Austria.

Ottokar IV, the son of Ottokar III of Styria and the last of the dynasty of the Ottakars, had entered into the Georgenberg Pact with Leopold V of Austria in 1186, which is to bring Styria under joint rule with Austria after his death in 1192.

The childless and deathly ill Ottokar, who had contracted leprosy while on crusade, is to give his duchy to Leopold and to his son Frederick under the stipulation that Austria and Styria will henceforth remain undivided.