Read the following passage carefully and answer the questions no. 4 and 5 :

Walt Whitman was a poet, essayist, journalist and humanist. He was born on 31 May 1819 in West Hills, Long Island, New York. He grew up in a large family and attended public school until the age of eleven. After leaving school, he worked as a printer's apprentice and later as a teacher and journalist.

In 1855, Whitman published the first edition of his most famous poetry collection, 'Leaves of Grass'. Though it received mixed reviews at first, the book became highly influential and was expanded many times throughout his life. During the American Civil War in 1861 Whitman served as a volunteer in Washington DC caring for wounded soldiers. His wartime experiences deeply influenced his later writings. Whitman received widespread recognition during his lifetime and is now considered one of America's greatest poets. In 1873, he suffered a stroke, after which he moved to Camden, New Jersey, where he lived for the rest of his life. Walt Whitman died on 26 March 1892 in Camden and was
buried in Harleigh Cemetery.