The Russo-Turkish War of 1735–1739 between Russia and the Ottoman Empire was caused by the Ottoman Empire's war with Persia and continuing raids by the Crimean Tatars. The war also represented Russia's continuing struggle for access to the Black Sea.In 1737, the Holy Roman Empire joined the war on Russia's side, known in historiography as the Austro-Turkish War of …

Nader grew up during the final years of the Safavid dynasty which had ruled Iran since 1502. At its peak, under such figures as Abbas the Great, Safavid Iran had been a powerful empire, but by the early 18th century the state was in serious decline and the reigning shah, Sultan Husayn, was a weak ruler.When Sultan Husayn attempted to quell a rebellion by the Ghilzai Afghans in …