Where was the treaty transfering the Sanjak of Pojega to the Habsburg Monarchy signed?
Sanjak of Pojega:  It existed until the Treaty of Karlowitz (1699), when the region was transferred to the Habsburg Monarchy. Treaty of Karlowitz: The Treaty of Karlowitz was signed on 26 January 1699 in Sremski Karlovci, in modern-day Serbia, concluding the Austro-Ottoman War of 1683–97 in which the Ottoman side had been defeated at the Battle of Zenta.
Sremski Karlovci