Answer
Seven Million copies of Rihanna's second studio album were sold worldwide. The album was released in 2006 and featured the hit singles "Unfaithful" and "Hate That I Love You". It was a commercial success, debuting at number one on the Billboard 200 chart and selling over 7 million copies worldwide. The album was also well-received by critics, who praised Rihanna's vocal performance and the album's production.