Roosevelt, Theodore: - Theodore Roosevelt, commonly known as Teddy or T. R., was born on October 27, 1858, in New York City at the Theodore Roosevelt Birthplace National Historic Site. He served as the 26th president of the United States from September 14, 1901, to March 4, 1909. He was a member of the Republican Party, was known for his progressive policies, including trust-busting, conservation efforts, and the establishment of national parks. Before becoming president, Roosevelt had a long and varied political career. He served as the 33rd governor of New York, a position he held from 1899 to 1900. His leadership in New York helped catapult him to national prominence. He also served as vice president under McKinley from 1901 until becoming president. Roosevelt remained active in public life, running again for president in 1912 as a third-party candidate for the Progressive Party, although he did not win. He died on January 6, 1919, at the age of 60, at his home in Sagamore Hill National Historic Site in Cove Neck, New York. Roosevelt's legacy continues to be celebrated for his contributions to American politics, foreign policy, and conservation.