Peshwa Period — Key Changes

Entry	Year	Description	Impact
N/A (No formal constitutional amendments)	1719	Mughal-Maratha Treaty (Delhi Treaty) secured by Balaji Vishwanath.	Legitimized Maratha claims to Chauth and Sardeshmukhi over six Deccan subahs and parts of Gujarat/Malwa, providing a stable revenue base and Mughal recognition of Shahu. This was a de facto 'constitutional' shift in power dynamics.
N/A	1750	Sangola Agreement between Balaji Baji Rao and Chhatrapati Rajaram II.	Formally transferred de facto administrative and military power from the Chhatrapati to the Peshwa, making the Peshwa the supreme authority and confining the Chhatrapati to a titular role in Satara. This was a critical internal 'constitutional' change.
N/A	1782	Treaty of Salbai, ending the First Anglo-Maratha War.	Restored status quo, recognized Madhav Rao Narayan as Peshwa, and granted Salsette to the British. It provided 20 years of peace between the British and Marathas, allowing the British to focus on Mysore, but also acknowledged British presence as a significant power.
N/A	1802	Treaty of Bassein between Peshwa Baji Rao II and the British.	Peshwa accepted a subsidiary alliance, effectively surrendering his independence and bringing the Maratha state under British paramountcy. This treaty was a major step towards British dominance and triggered the Second Anglo-Maratha War.