Complex sentence: Nelly's second studio album, "Nellyville", was released in the same year: it reached number one on the "Billboard" 200, as well as appearing in the top five of several European album charts.
Split into simpler sentences: Nelly's second studio album, "Nellyville", was released in the same year. It reached number one on the "Billboard" 200, as well as appearing in the top five of several European album charts.