(Maharani Yesubai) and Peshwa Ramchandra Pant Amatya sent young Rajaram to the stronghold of Pratapgad through Kavlya ghat.[citation needed] Rajaram to escape through Kavlya ghat to the fort of Jinji through the Pratapgad and Vishalgad forts, Rajaram reached Keladi in disguise and pursued assistance from Keladi Chennamma - who kept the Mughal attack in check to ensure safe passage and escape of Rajaram to Jinji where he reached after a month and a half on 1 November 1689. Kolhapur Branch In 1707, Mughal Emperor Muhammad Azam Shah released Shahu Bhosale, the son of Sambhaji. However, his mother was kept as a hostage of the Mughals, in order to ensure that Shahu adhered to the release conditions. Immediately the Maratha throne was claimed his aunt Tarabai, claiming the throne for her son Shivaji II. After his victory at the Battle of Khed, Shahu established himself at Satara, forcing her to retire with her son to Kolhapur. This resulted in the creation of the Kolhapur branch in 1709 under Tarabai, splitting from the main Satara branch under Shahu.. Shivaji II and Tarabai were soon deposed by Rajasbai, the other widow of Rajaram. She installed her own son, Sambhaji II as the new ruler of Kolhapur. Sambhaji then made alliance with the Nizam. The defeat of the Nizam by Bajirao I in the Battle of Palkhed in 1728 led to the former ending his support for Sambhaji. Sambhaji II signed the Treaty of Warna in 1731 with his cousin Shahuji to formalize the two separate seats of Bhonsle family. Maratha Confederacy Confederacy era Shahu appointed Balaji Vishwanath a member of the Bhat Family as his Peshwa. The Peshwa was instrumental in securing Mughal recognition of Shahu as the rightful heir of Shivaji and the Chhatrapati of the Marathas. Balaji also gained the release of Shahu's mother, Yesubai, from Mughal captivity in 1719. The Peshwas later became de facto rulers of the Maratha Empire. Under the Peshwas, Chhatrapati was limited to simply a monarchial figurehead. Maratha Empire dominated most of the Indian subcontinent. Under the Peshwas the Marathas expanded to their greatest extent. 1737, Under Bajirao I invaded Delhi in a blitzkrieg manner at the Battle of Delhi (1737). The Nizam set out from the Deccan to rescue the Mughals from the invasion of the Marathas, but was defeated decisively in the Battle of Bhopal. The Marathas extracted a large tribute from the Mughals