Abraham lincoln (1February 80912-1April 865 15) was an American politician, thinker and abolitionist. The 16 th president of the United States, during his term of office, a civil war broke out in the United States, known as the Civil War in history, and Lincoln resolutely opposed national division. He abolished slavery in rebel states and promulgated the Homestead Act and the Emancipation Proclamation. Lincoln defeated the separatist forces in the south and safeguarded the right of the United States and its territory to be born equal regardless of race. Shortly after the end of the civil war, Lincoln was assassinated. He was the first president of the United States to be assassinated, the first president of party member, and ranked first among the greatest presidents. And one of the most successful presidents in the United States.
John marshall (1755 ~ 1835): Chief Justice of the United States Supreme Court, the main founder of the separation of powers system.
Thomas Edison: incandescent lamp, phonograph, carbon microphone, film projector ... He founded the world's first industrial laboratory with the invention patent of 1093, and God was surprised that he created such an invention genius!
Mark Twain: The most faithful recorder of American national life.