Abraham Lincoln, born in 1809, was president of the United States before he was assassinated in 1865. Many scholars consider him the greatest president that the United States States have ever had in history. One of his major achievements was the successful leadership of the American country during the Great Internal Crisis. He sealed the Union of the country and fought slavery to the end. Lincoln was a lawyer, after which he became a legislator representing the state of Illinois. He was a member of the House of Representatives during one election. In family matters, Lincoln was considered a loving, kind husband and father of four children. Donald 2001 pp.69).Background InformationToday, the word presidential veto does not appear in the United States Constitution, but Article I requires that bills, orders, resolutions, or other legislative acts of Congress be introduced to the president for approval (Belz 1998 p. 136). Normally the bill is presented to the President, he can either sign it or send it back to the Congress that originated the bill with their objections to the bill. The proper constitutional term used is a veto, or not signing it or returning it to Congress after the bill has been presented for ten days exempting Sundays in cases where Congress is still in session, the bill law becomes law; otherwise, the bill does not become law and is considered a pocket veto under the US Constitution (Donald 2001 p.112). Literature Review In his first inaugural address, in 1861, he expanded the nature of democracy by denouncing secession as anarchy, shedding light on popular rule by balancing the constraints that governed the American system ( Angle 1992 p .64). He believed in a true ruler with a trained free people achieved v...... middle of paper ......re; Thaddeus Stevens, Charles Sumner, and Benjamin Wade are the president's political allies on other issues of national importance. He was determined to unite Americans, not separate them from the South. He publicly declared the amnesty proclamation pardoning those who had previously held Confederate civilian office, those who had no reports of abuse regarding Union prisoners, and were willing to symbolically take the oath of allegiance (Donald pp. 236). ConclusionLincoln is a clear challenger. against the expansion of slavery, challenged and articulated in his campaign on themes that supported and encouraged slavery, which led him to rise the political ladder to become one of the most powerful presidents that the America has ever had. According to Angle et al, 1992, Lincoln has consistently been voted by scholars as the greatest president of the era and in history..