John Marshall dedicated his significant volumes on Sanchi to Sultan Jehan.

Explanation:

John Marshall was a British archaeologist who served as the Director-General of the Archaeological Survey of India from 1902 to 1928. During his tenure, he conducted extensive excavations and research in various parts of India, including the ancient Buddhist site of Sanchi in Madhya Pradesh.

Marshall's work on Sanchi was groundbreaking and helped to shed light on the rich cultural and artistic heritage of ancient India. He published several volumes on Sanchi, including "The Monuments of Sanchi" and "A Guide to Sanchi." These volumes contained detailed descriptions and illustrations of the various structures, sculptures, and inscriptions found at the site.

In recognition of his contributions to Indian archaeology and his dedication to the study of Sanchi, Marshall dedicated his volumes on the site to Sultan Jehan Begum. Begum was the ruler of the princely state of Bhopal from 1901 to 1926 and was known for her patronage of the arts and culture. Marshall's dedication to Begum was a gesture of appreciation for her support of his work and her contributions to the preservation of Indian heritage.

In summary, John Marshall dedicated his significant volumes on Sanchi to Sultan Jehan Begum as a recognition of her support for archaeology and preservation of Indian heritage.

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