Answer
Calcutta, the answer to the question, underwent significant transformation during Dalhousie's tenure. He introduced various infrastructural advancements and established crucial institutions, including the Calcutta University, the Calcutta Medical College, and the Calcutta Port. Calcutta's growth as a prominent center for education, healthcare, and trade was largely influenced by Dalhousie's initiatives, leaving a lasting impact on the city's development and shaping its trajectory.