Harry S. Truman was the 33rd President of the United States. He was born in a small farming town in Missouri in 1884. Before becoming the president, Truman had many jobs, including a timekeeper for a railroad construction company and a farmer. Truman became President in 1945 after President Franklin D. Roosevelt died. One of his most significant decisions was to end World War II by dropping atomic bombs on Japan. This was a difficult choice, but Truman believed it would save American lives. Truman is famous for the phrase "The buck stops here," which he kept on a sign on his desk. This meant that he was the one ultimately responsible for the country's decisions. Truman also initiated the Truman Doctrine, which aimed to stop the spread of communism during the Cold War. After his presidency, Truman returned to his home in Missouri. He wrote memoirs and was active in local community life. He left a lasting legacy in American politics and history. Today, he is remembered for his decisiveness and sense of responsibility.