Abraham lincoln (Abraham? Lincoln, 1809- 1865), an American politician, was the16th president (term: 186 1 March 4, 2008-1April 865/kloc-) During his presidency, a civil war broke out in the United States, known as the Civil War in history. Lincoln defeated the separatist forces in the south, abolished slavery and safeguarded national unity. But shortly after the end of the civil war, Lincoln was unfortunately assassinated. He was the first American president to be assassinated, and also a great president who was born in poverty.