Complex sentence: The Macmillan Committee, officially known as the Committee on Finance and Industry, was a committee, composed mostly of economists, formed by the British government after the 1929 stock market crash to determine the root causes of the depressed economy of the United Kingdom.
Split into simpler sentences: The Macmillan Committee, officially known as the Committee on Finance and Industry, was a committee, composed mostly of economists, formed by the British government after the 1929 stock market crash. Its purpose was to determine the root causes of the depressed economy of the United Kingdom.