Aneurin Bevan played a key role in the creation of the NHS in 1948 as the Minister of Health. As Minister of Health, Bevan oversaw the establishment of the NHS and the nationalization of the hospitals in England and Wales. The document provides guidance on answering questions about historical figures or events by describing what happened and their impact in 1-3 sentences (Level 1), describing key details in 4-6 sentences (Level 2), or fully explaining their significance in 7-9 sentences (Level 3).