Do you ever wonder what would have happened to the United States if slavery had not been abolished? Would it have stayed as a united country or would it have broken up into two different countries? Abraham Lincoln was the 16th U.S president, who is best known for freeing the slaves. President Lincoln can be credited with being the one to maintain the United States as a whole country. Abraham Lincoln is influential to U.S. history because he was able to preserve the Union, he issued the Emancipation Proclamation, and he signed the National Banking Act. Abraham Lincoln was determined on keeping the Union united; he believed it was his obligation as president of the U.S. to keep the Southern states from seceding completely from the Union,
