Consider the following statements related to the Maratha Confederacy and choose the true statement/s from the below options.

 

a. The Maratha Confederacy was officially founded in 1674 with the coronation of Shivaji Maharaj, embodying the collective resistance against Mughal expansion in India.

b. The Maratha Confederacy extensively used guerrilla warfare tactics, mastered and popularized by Shivaji Maharaj, as a principal military strategy against their adversaries throughout its existence.

c. The Treaty of Purandar (1665) between Shivaji Maharaj and the Mughal Empire formalized the structure of the Maratha Confederacy by recognizing Maratha autonomy in certain regions.

d. The concept of Chauth and Sardeshmukhi were revenue systems introduced by the Maratha Confederacy, where Chauth represented a 25% tax on land revenues collected by local rulers, and Sardeshmukhi was an additional 10% levy on top of Chauth claimed by the Marathas as the rightful sovereigns.