Russian campaign 1736.
This treaty ended two years hostilities of the so-called Austro-Turkish War, between 1737 and 1739. The Imperial Russia joined the Austrians to fight the Ottoman Turkish expansion in Europe, as shown in the maps below. In addition, the Russians signed the Treaty of Niš, which allowed the Russians access to the Black Sea, where they began to build the port of Azov.
The Habsburg dynasty had to give Serb territories, with its capital Belgrade, southern Banat of Temeswar and northern Bosnia, the Ottoman Turks.
Political situation in 1739, after Treaty of Belgrade.
Therefore, the Treaty of Belgrade ended with the Kingdom of Serbia, which had existed since 1718.
Thus, the Serbs would have to wait another war between the Holy Roman Empire and the Turkish-Ottoman Empire, in 1788, to free culture Turkish and Turkish onerous taxation.