You have two versions or a bad version of Spring Core in your classpath: clean your glassfish/tomcat commons lib folder (in eclipse, clean work directory on your server) and clean your Maven projects dependencies (mvn clean eclipse: clean eclipse:eclipse + refresh).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.