The Battle of Vienna took place at Kahlenberg Mountain near Vienna in which year, after the imperial city had been besieged by the Ottoman Empire for two months, In the ensuing war that lasted until 1699, the Ottomans lost almost all of Hungary to the Holy Roman Emperor Leopold I, was the Holy Roman Emperor, King of Hungary, Croatia, and Bohemia?
Battle of Vienna: The Battle of Vienna (German: "Schlacht am Kahlen Berge" or "Kahlenberg"; Polish: "bitwa pod Wiedniem" or "odsiecz wiedeńska" (The Relief of Vienna); Modern Turkish: "İkinci Viyana Kuşatması", Ottoman Turkish: "Beç Ḳalʿası Muḥāṣarası") took place at Kahlenberg Mountain near Vienna on 1683 after the imperial city had been besieged by the Ottoman Empire for two months. Leopold I, Holy Roman Emperor: Leopold I (name in full: "Leopold Ignaz Joseph Balthasar Felician"; Hungarian: "I. Lipót" ; 9 June 1640 – 5 May 1705) was Holy Roman Emperor, King of Hungary, Croatia, and Bohemia.
i don't know