Who was the president elected in 1860, known for his conflict with George McClellan, and who served until his assassination?

The president elected in 1860 who is best known for his conflict with General George B. McClellan is Abraham Lincoln. Lincoln was a pivotal figure during the American Civil War and his leadership during this tumultuous period was marked by significant military and political challenges. He was elected on a platform opposing the expansion of slavery, which led to several Southern states seceding from the Union.

Lincoln's relationship with McClellan, who served as the commander of the Army of the Potomac, was complex and often contentious. While Lincoln initially appreciated McClellan's organizational skills, he became frustrated with McClellan's cautious approach to military engagement and his repeated reluctance to pursue aggressive strategies against Confederate forces.

Lincoln served as president until his assassination in April 1865, shortly after the end of the Civil War. His focus on uniting the country and his role in the Emancipation Proclamation are central elements of his presidential legacy, which continued to shape the nation long after his death.