Simplify the following text for a Grade 7 native English-speaking person.
Original: Fallen spent 43 weeks on the Billboard Top 10 ; was certified 7x Platinum in the United States ; and sold more than 15 million copies worldwide , including 7 million in the US .
Simplified: Fallen became a worldwide success , and spent 43 weeks on the Billboard top 10 charts . It sold over 15 million copies and was certified 7x platinum in the United States .