It is only fair to admit that it was the culture and social norm during the presidencies of Washington and Jefferson, but it was also morally wrong, something that cannot be avoided with thought. It is also beneficial to note that before and even during Lincoln's presidency, slavery was widepread and did not recive a substancial opposition. Lincoln was part of the movement that eventually ended slavery.
Lastly, Lincoln was a very thoughtful leader. He knew that sometimes, as a leader, you could become one sided, and drift from truely representing the people. To make sure he was always truely representing the people, he appointed trusted officials with opposide political party affiliations and ideologies to his cabinet, making sure his administration was fair, and open minded.
Each of the three presidents mentioned would be considered by anyone as some of the greats. Each overcame a set of obstacles, from establishing a nation to keeping that same nation a whole, the Untited States of America. Out of the three, Abraham Lincoln showed the most strength, integrity and moral virtue, which ultamitely contributed to his success as