Sher Shah Suri was the ruler who introduced the new coin called ‘Rupiya.’ During his reign from 1540 to 1545, he issued this standardized silver currency, weighing 178 grains or approximately 11.53 grams. The issuance of ‘Rupiya’ marked a significant reform in the Indian monetary system, establishing a currency that would be used for centuries to come. Sher Shah Suri is known for his effective administrative policies and financial reforms, which laid the foundation for the future Mughal Empire’s currency system. Therefore, the correct answer is:
Sher Shah Suri