What is the major contribution of Mahabharata to literature?

The Mahabharata is a monumental epic that significantly contributes to literature through its complex narrative, rich character development, and exploration of profound themes such as duty (dharma), morality, and the nature of human existence. Its intricate storytelling blends mythology, philosophy, and history, making it one of the longest and most influential texts in world literature. Additionally, the Mahabharata has inspired countless adaptations, interpretations, and artistic expressions across various cultures, reinforcing its enduring legacy.