Complex sentence: With Aaliyah's death, there was an increase in sales of her self-titled third album which had been released only a month before and had debuted at number two on the "Billboard 200", selling over 187,000 copies in its first week.
Split into simpler sentences: With Aaliyah's death, there was an increase in sales of her third album. The album, self-titled "Aaliyah", was released only a month before she died and debuted at number two on the "Billboard 200", selling over 187,000 copies in its first week.