What does this mean for Buddhism Achievements impacting India?

For centuries Indian royalty and merchants patronized Buddhist monasteries and raised beautiful, hemispherical stone structures called stupas over the relics of the Buddha in reverence to his memory. Since the 1840s, archaeology has revealed the huge impact of Buddhist art, iconography, and architecture in India. The monastery complex at Nalanda in Bihar, in ruins in 1993, was a world center for Buddhist philosophy and religion until the thirteenth century.