Arthur Andersen, once a leading global accounting firm, collapsed in 2002 due to a series of accounting scandals involving major clients like Enron and WorldCom. Contributing factors included a culture of poor audits, cozy relationships with clients, and intense pressure for revenue, which led to significant ethical misconduct. Following its bankruptcy, the firm ceased auditing public corporations, marking the end of its 90-year history, despite a later Supreme Court ruling that overturned its conviction.