Complex sentence: The Federal Open Market Committee known as Operation Twist (named for the Twist dance craze of the time) began in 1961 was created to flatten the yield curve in order to promote capital inflows and strengthen the dollar.
Split into simpler sentences: The Federal Open Market Committee action known as Operation Twist (named for the Twist dance craze of the time) began in 1961. The intent was to flatten the yield curve in order to promote capital inflows and strengthen the dollar.