Serving as President from 1901 to 1909, Roosevelt’s most heralded accomplishments arguably revolved around conservation, which included creating five national parks and establishing 150 national forests.
It’s this particular area that Leonardo DiCaprio has been interested in exploring for the biopic, which isn’t shocking considering the actor’s own environmental activism.
He remains the youngest U.S. president, taking office at age 42 after bringing his tenure as Vice President only six months before McKinley died.
Even before he became President of the United States in 1901 following the assassination of William McKinley, Theodore Roosevelt led an eventful life, from serving as the New York City Police Commissioner to leading the Rough Riders during the Spanish-American War.