1) The first successful portable MP3 player, the Diamond Rio PMP300, was released in 1998 and could hold up to 60 minutes of music.

2) The world's first credit card was introduced in 1950 by Diners Club.

3) Beyoncé, full name Beyoncé Giselle Knowles-Carter, is a highly influential American singer, songwriter, actress, and businesswoman. She rose to fame as a member of the group Destiny's Child and has since achieved success as a solo artist.

4) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.