If Allan Pinkerton had not accompanied Lincoln to Baltimore, Lincoln would have been assassinated and Hannibal Hamlin would have become president. With Hamlin as president, the Confederacy would have gained independence and allied with Great Britain and Canada, allowing slavery to continue. Hamlin would not have been re-elected, weakening the Republican party. The US would not have felt powerful enough to expand internationally or get involved in World Wars while bordering the Confederacy. This would have prevented the US from becoming a global economic power in the early 20th century. By the 2000s, the US would be a smaller industrial nation bordered by the Confederacy and Canada, with less international trade and influence.