His Majesty King Bhumibol studied in Switzerland where he continued in secondary education and studied science in Lausanne University. However, the death of his brother, King Ananda Mahidol in Bangkok on 9th June, 1946, changed his life. According to the Law of Succession bestowed on him, he was the next heir to the throne. In order to better equip himself with the proper knowledge of the government and politics, His Majesty King Bhumibol changed his major to the subject of Political Science and Law.