Theodore Roosevelt Jr. was born on October 27, 1858, in New York City, to a prosperous and distinguished family. He was a sickly child who suffered from asthma but overcame his physical limitations through a vigorous lifestyle. Roosevelt was a Harvard graduate, a war hero, and a passionate advocate for reform in both domestic and foreign policy. He is known for his energetic personality, range of interests, and achievements as a naturalist, explorer, hunter, author, and soldier. He was a driving force for the progressive era in the United States in the early 20th century. Roosevelt's contributions to conservation and his establishment of national parks are among his enduring legacies.