I believe that this war should have been avoided and was prolonged and was the direct cause of the rise of Hitler which resulted in the Second World War. In my opinion, I think that World War I was the cause of the most brutal war. With Hitler, the concentration camps and the Germans murdering the Jews in the horrible way they did, they had no remorse and are personally happy that Germany lost the war or was forced to abandon the war due to the lack of resources available to it. World War I changed the world