chapter 27 the new power balance 1850 1900 questions

This is a history class 101,

I need to answer all the question with complete thought and doesn’t have to be too long but be spescific with the answer. Also each question should answer separately.

1. Define the concept of Nationalism? What was significant about the unification of Germany and Italy?

2. How and why did liberalism and nationalism threaten the Austria-Hungarian and Russian Empires?

3. Describe the origins and the aims of the labor movement and socialism in the late nineteenth century?

4. How did technological innovation and economic growth affect the societies of the industrialized countries?