Conversation so far:
What did Britney Spears do in 2001?
In February 2001, Britney Spears signed a $7–8 million promotional deal with Pepsi, and released another book co-written with her mother, titled A Mother's Gift.

Question: Did she go on tour in 2001?
Self-contained rewrite: Did Britney Spears go on tour in 2001?