The War of the Worlds Community Quotes

This is an idea that is repeated a lot in science fiction: if aliens attacked, all of Earth would be united. Putting aside whether that's actually what would happen, we can see how sharing some life-altering experience might help form a sense of community. But is that what the rest of the book has shown us? When England was attacked, the English didn't get a new conception of their commonweal, did they? They beat and stabbed each other in order to get away from the Martians. So why does the book end with this hope for a sense of community if the rest of the book hasn't given us much reason to be optimistic?