Mark Twain was called the Lincoln of American literature because he was the most respected and influential person in the history of American literature, and he had a profound influence on American history and politics. Lincoln was the greatest president in American history. His leadership and influence had a profound impact on American history. He led the federal government to victory in the Civil War, maintaining the unity of the United States and promoting the development of American politics. His biography of Abraham Lincoln was the most famous biography in the history of American literature and was widely read and studied. Mark Twain's works covered a wide range of American history, politics, culture, and social life. His novels, such as The Adventures of Tom sawyer and The Adventures of Huckleberry Finn, portrayed the growth and life of young Americans and had a profound impact on American literature. His masterpieces such as The Story of American History explored the evolution of American politics, culture, and society through the description of historical events and characters. Therefore, Mark Twain was regarded as the Lincoln of American literature because his works had a profound influence on American history and politics, and his works portrayed many aspects of American history and culture.