When did Claude Monet pass away and what did he die of ?
Degas invited Mary Cassatt to display her work in the 1879 exhibition , but he also caused dissension by insisting on the inclusion of Jean - François Raffaëlli , Ludovic Lepic , and other realists who did not represent Impressionist practices , causing Monet in 1880 to accuse the Impressionists of " opening doors to first - come daubers " .