When considering the best U.S. president, one must analyze various aspects like leadership qualities, policy decisions, and impact on the nation's history. A few notable examples include Abraham Lincoln's role in abolishing slavery, Franklin D. Roosevelt's New Deal during the Great Depression, and George Washington's crucial leadership during the American Revolution.

Abraham Lincoln is often regarded as one of the greatest U.S. presidents due to his leadership during the Civil War and the Emancipation Proclamation. On the other hand, Franklin D. Roosevelt is celebrated for his role in navigating the U.S. through the Great Depression and World War II. Each president's legacy is evaluated based on their actions, policies, and impact on the nation.