Final answer:
The Mona Lisa is considered one of the greatest paintings due to Leonardo da Vinci's remarkable technique and the intriguing smile of the subject. Its unique features and mysterious history set it apart from other paintings.
Step-by-step explanation:
The Mona Lisa is regarded as one of the world's greatest paintings due to its unique features and the mystery surrounding it. One reason is Leonardo da Vinci's exceptional technique and skill in creating a realistic and engaging portrait. The painting's enigmatic smile, the use of sfumato technique, and the artist's innovative approach in capturing emotions make it stand out from other paintings of its time. Additionally, the identity of the subject and the history behind the artwork have fascinated people for centuries, further adding to its greatness.
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