Reconciling with the south rather than punishing it
European appeasement of German aggression in an effort to avoid conflict is the answer
The main difference is which part of Europe they came from, and the numbers of immigrants. There were many, many more "New Immigrants'" than old, 20 million people between 1880 - 1920. And the New Immigrants came mostly from southern and Eastern Europe, which meant they were almost all Catholics.
It limited the power of the king
