Page "Genosha" Paragraph 10

By New X-Men # 115, Genosha had a population of sixteen million mutants and a stable, advanced society.

However, the entire island was reduced to rubble and its mutant population was slain by Cassandra Nova's Sentinels.

There were few survivors, many evacuated, and the Brotherhood of Mutants turned one of the Sentinels into a memorial statue in # 132.