Final answer:
Ashoka the Great contributed to the spread of Buddhism through missionary activities and the construction of Buddhist structures.
Step-by-step explanation:
Ashoka the Great, a Mauryan emperor in ancient India, played a significant role in the spread of Buddhism. He promoted the religion through various methods, such as sending Buddhist missionaries to different countries (C), including Sri Lanka and Southeast Asia. Ashoka also built numerous Buddhist monasteries and stupas (Buddhist religious structures), which helped in the dissemination of Buddhist teachings.
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