Napoleon was defeated at the Battle of Waterloo in June 1815 and subsequently exiled to the island of Elba. However, he escaped and returned to France and the Hundred Days' War began in March 1815. After his final defeat at the Battle of Waterloo, the allies decided that Napoleon should be permanently exiled to Saint Helena.
Napoleon arrived on Saint Helena on 15 October 1815 and was confined to Longwood House, a small house in the center of the island. He lived on the island for the rest of his life and died there on 5 May 1821 at the age of 51. The cause of death was initially attributed to stomach cancer but recent research has suggested that Napoleon may have been poisoned with arsenic.
Saint Helena is important in the life of Napoleon Bonaparte France as it was the place of his exile and death. It is also a popular tourist destination, attracting visitors from all over the world who come to see where the great emperor spent his final years.