Conversation so far:
Is forever the name of one of their albums?
In November 2000, the group released Forever.
Was it a popular album?
In total, Forever achieved only a fraction of the success of its two best-selling predecessors, selling five million copies.
Was that the reason that the spice girls took a hiatus?
December 2000, the group unofficially announced that they were beginning an indefinite hiatus and would be concentrating on their solo careers.

Question: How long was the hiatus?
Self-contained rewrite: How long was the hiatus of Spice Girls?