in southern Chile, for ten weeks William worked on local construction projects and taught English. He lived with other young volunteers, sharing in the common household chores. His interest in African culture prompted him to teach himself Swahili. In 2001, William enrolled at the University of St Andrews in Scotland. Similar to his time at Eton, the media agreed not to invade William's privacy, and students were warned not to leak stories to the press. he embarked on a degree course in Art History, later changing his main subject to Geography. William wrote his dissertation on the coral reefs of Rodrigues in the Indian Ocean and graduated with an undergraduate Master of Arts (MA Hons) degree with upper second class honours in 2005. While at university, he represented the Scottish national universities water polo team at the Celtic Nations tournament in 2004. He was known as "Steve" by other students to avoid any journalists overhearing and realising his identity. Early adulthood and duties At the age of 21, William was appointed a Counsellor of State; he first served in that capacity when the Queen attended the Commonwealth Heads of Government Meeting in 2003. In July 2005, he embarked on his first solo public engagements on an overseas tour of New Zealand, travelling to participate in World War II commemorations. According to author Tina Brown, he had, like his father, expressed a desire to become Governor-General of Australia. In 2009, the Queen set up a private office for William and Harry with David Manning as their adviser. Manning accompanied William on his first official tour in January 2010 as he toured Auckland and Wellington; William opened the new building of the Supreme Court of New Zealand and was welcomed by a Māori chief. The visit spurred crowds of "many thousands", with positive public reception compared to that of Diana's 1983 tour. In March 2011, William visited Christchurch, New Zealand, shortly after the earthquake, and spoke at the memorial service at Hagley Park on behalf of his grandmother. He also travelled to Australia to visit areas affected by flooding in Queensland and Victoria. Upon graduation from university, William interned in land management at Chatsworth House and in banking at HSBC. To prepare for his eventual management of the Duchy of Cornwall, in 2014, he enrolled in a vocational agricultural management course at Cambridge, which was organised by the Cambridge Programme for Sustainability