The Hindu Marathas long had lived in the Desh region around Satara, in the western portion of the Deccan plateau, where the plateau meets the eastern slopes of the Western Ghats mountains. They had resisted incursions into the region by the Muslim Mughal rulers of northern India. Under their ambitious leader Shivaji, the Maratha freed themselves from the Muslim sultans of Bijapur to the southeast and, becoming much more aggressive, began to frequently raid Mughal territory, eventually sacking the wealthy Mughal port of Surat in 1664. After substantial territorial gains, Shivaji was proclaimed 'Chhatrapati' (Emperor) in 1674; the Marathas had spread and conquered much of central India by Shivaji's death in 1680. Subsequently, under the able leadership of Brahmin prime ministers (Peshwas), the Maratha Empire reached its zenith; Pune, the seat of Peshwas, flowered as a centre of Hindu learning and traditions. The empire at its peak stretched from Tamil Nadu in the south, to Panipat in Haryana ) in the north, and Bengal in the east. In 1761, the Maratha army lost the Third Battle of Panipat to Ahmad Shah Abdali of the Afghan Durrani Empire which halted their imperial expansion into Afghanistan. Ten years after Panipat, the young Peshwa Madhavrao I's Maratha Resurrection reinstated Maratha authority over Uttar Pradesh.