Technology, innovation, and industrialization increased the ideology of conflict, as can be seen when one compares the Thirty Years War, the Thirty Years World War, and the thirty years of conflict that was World War I and World War II. So the answer would be letter a.
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.
Answer:
I don't understand you.... Complete your sentence first....
