I want to know the answer to the following question:
After a victorious battle in 1526 in what present-day nation was Turkish rule expanded to?
All the background I'm provided with is that "In 1555, the Caucasus became officially partitioned for the first time between the Safavids and the Ottomans, a status quo that would remain until the end of the Russo-Turkish War (1768–74).". Is that enough to answer the question?