Abraham Lincoln was the 16th president of the United States, serving from March 1861 until his assassination in April 1865. Lincoln led the United States through its Civil War. In doing so, he preserved the Union, abolished slavery, strengthened the federal government, and modernized the economy. In the episode Let's Bounce, Heinz Doofenshmirtz created an Abraham Lincoln robot using his Tell-the-Truth-inator. Puss in Doof 'N' Puss was framed for his 1865 assassination (Nerds of a Feather).