Final answer:
Ashoka the Great was the best-known Maurya Emperor, under whose rule the empire reached its greatest size. He ruled nearly all of India, brought about significant Buddhist influences, and made efforts to spread its teachings.
Step-by-step explanation:
The best-known Maurya Emperor under whom the empire reached its greatest size was Ashoka the Great. Ashoka reigned over almost all of the Indian subcontinent, from present-day Afghanistan in the west to Bangladesh in the east. He's also known for his deep commitment to Buddhism and his efforts to spread its teachings, something that greatly influenced the history and culture of Asia.
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