The Mahabharata, authored by Vyasa in the 4th century AD, is India's national epic and recounts the war of Kurukshetra between the Kauravas and Pandavas, highlighting themes of duty, sacrifice, and heroism. Key characters such as Arjuna, Karna, and Yudhishthira embody values like courage, friendship, and teamwork, showcasing how their individual strengths contribute to their collective mission. The epic emphasizes the importance of cooperation, discipline, and proper leadership in achieving success, with memorable moments of sacrifice and commitment from various characters.