title: Battles involving the Maratha Empire
context: After a lifetime of warfare with Adilshah of Bijapur and Mughal emperor Aurangzeb, Shivaji founded an independent Maratha kingdom in 1674 with Raigad as its capital. Shivaji died in 1680, leaving behind a large kingdom. After Shivaji, Sambhaji took up throne and expanded Hindavi Swaraj. He built strong army as well as strong navy. Mughal emperor Aurangzeb sacrificed his throne and came to Deccan to defeat Sambhaji. The Mughals invaded, fighting an unsuccessful War of 27 years from 1681 to 1707. Shahu, a grandson of Shivaji, ruled as emperor until 1749. During his reign, Shahu appointed the first Peshwa as head of the government, under certain conditions. After the death of Shahu, the Peshwas became the de facto leaders of the Empire from 1749 to 1761, while Shivaji's successors continued as nominal rulers from their base in Satara. Covering a large part of the subcontinent, the Maratha Empire kept the British forces at bay during the 18th century, until internal relations between the Peshwas and their sardars (army commanders) deteriorated, provoking its gradual downfall.
question: How long did The Maratha Conquests last?
answers: 27 years