system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Who is the most influential president in history?


assistant
Abraham Lincoln is mostly regarded as the greatest president for his leadership during the Civil War and the abolition of slavery. His main contender is Franklin D. Roosevelt, for leading the country out of the Great Depression and during World War II.