Abraham Lincoln emerged as an incarnation of the national Constitution.

Abraham Lincoln ( February 12, 1809 – April 15, 1865 ) was the 16th President of the United States, serving from March 1861 until his assassination in April 1865.

Abraham Lincoln was born February 12, 1809, the second child of Thomas Lincoln and Nancy Lincoln ( née Hanks ), in a one-room log cabin on the Sinking Spring Farm in Hardin County, Kentucky ( now LaRue County ).

Abraham Lincoln suffered from " melancholy ", a condition which now is referred to as clinical depression.

A sketch of candidate Abraham Lincoln

A political cartoon of Andrew Johnson and Abraham Lincoln, 1865, entitled " The Rail Splitter At Work Repairing the Union.

* The Collected Works of Abraham Lincoln

* Poetry written by Abraham Lincoln

* The Abraham Lincoln Presidential Library and Museum Springfield, Illinois

* The Papers of Abraham Lincoln documentary editing project

* National Endowment for the Humanities Spotlight – Abraham Lincoln

* The Abraham Lincoln Bicentennial Commission

* Lincoln / Net: Abraham Lincoln Historical Digitization Project, Northern Illinois University Libraries

* Abraham Lincoln: A Resource Guide from the Library of Congress

* Abraham Lincoln at C-SPAN's American Presidents: Life Portraits

Among his staff was Isham G. Harris, the Governor of Tennessee, who had ceased to make any real effort to function as governor after learning that Abraham Lincoln had appointed Andrew Johnson as military governor of Tennessee.

In the presidential election of 1860, the Republican Party, led by Abraham Lincoln, had campaigned against expanding slavery beyond the states in which it already existed.

Abraham Lincoln consistently made preserving the Union the central goal of the war, though he increasingly saw slavery as a crucial issue and made ending it an additional goal.

Anti-slavery Northerners mobilized in 1860 behind moderate Abraham Lincoln because he was most likely to carry the doubtful western states.

* 1865 – Abraham Lincoln dies after being shot the previous evening by actor John Wilkes Booth.

While in Washington, Doubleday remained a loyal Republican and staunch supporter of President Abraham Lincoln.

On January 14, 1863, the Alcotts received a telegram that Louisa was sick ; Bronson immediately went to bring her home, briefly meeting Abraham Lincoln while there.

Corbett was a member of the 16th New York Cavalry Regiment sent, on April 24, 1865, to apprehend John Wilkes Booth, the assassin of Abraham Lincoln, who was still at large.

John Wilkes Booth ( May 10, 1838 – April 26, 1865 ) was a famous American stage actor who assassinated President Abraham Lincoln at Ford's Theatre, in Washington, D. C., on April 14, 1865.

* a proclamation by President Abraham Lincoln designating April 30, 1863, a " National Day of Prayer and Humiliation "

When Virginia declared its secession from the Union in April 1861, Lee chose to follow his home state, despite his personal desire for the Union to stay intact and despite the fact that President Abraham Lincoln had offered Lee command of the Union Army.

Virginia voted to secede from the United States on April 17, 1861, after the Battle of Fort Sumter and Abraham Lincoln's call for volunteers.

* April 1 – Abraham Maslow, American psychologist ( d. 1970 )

* July 7 – Following Abraham Lincoln's assassination on April 14, the four conspirators condemned to death during the trial are hanged, including David Herold, George Atzerodt, Lewis Payne and Mary Surratt.

* April 15 – Abraham Lincoln, 16th President of the United States ( b. 1809 )

* April 26 – John Wilkes Booth, American actor and assassin of Abraham Lincoln ( b. 1838 )

* American Civil War fought between the remaining United States of America under President Abraham Lincoln and the self-declared Confederate States of America under President Jefferson Davis ( April 12, 1861 — April 9, 1865 ) and Vice President Alexander Stephens.

* President of the United States Abraham Lincoln is assassinated by John Wilkes Booth, April 14, 1865.

* April 15 – American Civil War: President Abraham Lincoln issues a Proclamation calling for 75, 000 men to confront in the South, " combinations too powerful to be suppressed in the ordinary way ".

* April 11 – Abraham van der Hulst, Dutch admiral ( d. 1666 )

* April 4 – Abraham Elzevir, Dutch printer ( died 1652 )

* April 11 – Abraham ben Saul Broda, Bohemian Talmudist

* April 14 – Abraham Darby I, one of the fathers of the Industrial Revolution ( d. 1717 )

* April 14 – Abraham Ortelius, Flemish cartographer and geographer ( d. 1598 )

From 1863 to 1869, Presidents Abraham Lincoln and Andrew Johnson ( who became president on April 14, 1865 ) took a moderate position designed to bring the South back to normal as soon as possible, while the Radical Republicans ( as they called themselves ) used Congress to block the moderate approach, impose harsh terms, and upgrade the rights of the Freedmen ( former slaves ).

While trying to elude Union cavalry, John Wilkes Booth and David Herold crossed into the county from Maryland on April 21, 1865 after assassinating US president Abraham Lincoln.

:: April 15 – President Abraham Lincoln dies of a head wound inflicted by assassin John Wilkes Booth.

:: April 15 – President Abraham Lincoln dies of a head wound inflicted by assassin John Wilkes Booth.