Conversation so far:
What was the Abba Generation?
The ABBA Generation is the debut studio album by Swedish pop group A-Teens.
What songs were on the Abba Generation?
The ABBA Generation had songs such as Mamma Mia, Gimme! Gimme! Gimme!, Super Trouper, and many more.
How did the Abba Generation do?
Despite its commercial success around the world, the album received overwhelmingly negative reviews from music critics.
How many copies did The ABBA Generation sell?
The ABBA Generation overall sold more than 3 million copies worldwide, being certified Gold or Platinum in over 22 different countries.
How did the album do in the US?
The ABBA Generation was certifed gold in the U.S. and had 500,000 units per sale.
Did the A-Teens continue to be successful while touring with Britney?
Yes. A-Teens's debut became a hit in North America, where the album reached seventy-one on the Billboard 200 Albums Chart being certified Gold in September 2000.

Question: How successful were they?
Self-contained rewrite: How successful were the A-Teens?