Why do many historians consider Abraham Lincoln to be the country’s greatest president?

Abraham Lincoln was confronted with the greatest crisis in the nation’s history, a civil war fought over the issue of slavery. His success in guiding the North to victory in battle, preserving the Union, and ending slavery in the face of enormous challenges has earned him an unmatched reputation. Why do many historians consider Abraham Lincoln to be the country’s greatest president? Would Americans who lived during the Civil War have agreed? Evaluate the efforts made by southern civilians in support of the war. Remember to include those who supported the Union, as well as those who supported the new Confederate government.