Conversation so far:
Did McKagan play for Guns N Roses?
McKagan replaced bassist Ole Beich in Guns N' Roses.
What year did he start with the band?
In April 1985.
Did he have to tryout?
replaced bassist Ole Beich in Guns N' Roses, which was newly founded by singer Axl Rose and guitarist Izzy Stradlin of Hollywood Rose.
Did he enjoy success with the band?
Guns N' Roses released its debut album, Appetite for Destruction, which to date has sold over 28 million copies worldwide, 18 million of which.

Question: What country did the band have its most success?
Self-contained rewrite: What country did Guns N' Roses have the most success?