A diverse world

The reasons why he might have named his book "the world remained silent" is because one, no one wanted to talk about the holocaust especially if  how they were treated put them in a depressing state of mind. my second reason is he felt silence that there was no reason to speak . the third and final reason is that they were basically slaves,  there were afraid to say anything and if they did at the time nothing could be done they lived in a world of horror. so I would say those would be reason why he would name the book " THE WORLD OF SILENCE".