Calvin Coolidge was the 30th President of the United States, serving from 1923 to 1929. He was known for his conservative policies and his belief in limited government intervention in the economy. Coolidge was often referred to as "Silent Cal" due to his reserved and quiet nature. He is remembered for his leadership during the Roaring Twenties, a period of economic prosperity and cultural dynamism in the United States. Coolidge's presidency was marked by tax cuts, reduced government spending, and a focus on promoting business and industry.