Abraham LINCOLN, for one, was a Unionist who helped MAKE the United States a unified nation. He is also remembered for his famous Gettysburg Address and his Emancipation Proclamation. His life has been the subject of many biopics, including the 2012 film 'LINCOLN'. He was also known for his invention of an AUTO-harp and a device to lift boats over shoals. He also owned a CAR, which was the first to be registered in Washington D.C.