President Teddy Roosevelt was the 26th President of the United States, serving from 1901 to 1909, and was a significant figure in the era of American imperialism. Known for his dynamic personality and progressive policies, he championed strong foreign policies, including the use of military power to protect American interests abroad and the promotion of the Panama Canal project. Roosevelt's approach to foreign affairs emphasized the importance of American leadership on the world stage and set the tone for future U.S. involvement in international conflicts.