Calvin Coolidge was the 30th President of the United States, serving from 1923 to 1929. He became president after the death of Warren G. Harding and was known for his quiet demeanor and belief in limited government. Coolidge's administration focused on economic growth and reducing taxes, which contributed to the prosperity of the 1920s. Coolidge was born on July 4, 1872, in Plymouth Notch, Vermont. He was a lawyer and politician before becoming president, serving as the Governor of Massachusetts. His famous motto, "The business of America is business," reflected his pro-business stance and commitment to free-market principles.