Answer
Knut Hamsun's work spanned 70 years. He wrote his first book, Hunger, in 1890 and his last, Ringsaker Marked, in 1961. He was a prolific writer who produced over 50 books, including novels, short stories, and essays. His work was often controversial and he was both praised and criticized for his writing. However, he is considered one of the most important Norwegian writers of all time.