Question

In the late 1800's and early 1900's nationalism *

1.brought instability to Germany
2.prevented World War I
3.inspired people who shared a particular language or culture to show pride by uniting politically
4.allowed foreign leaders to directly influence American opinion

Answer 1

3.inspired people who shared a particular language or culture to show pride by uniting politically.

Nationalism brought together people of similar backgrounds to create nation-states, or countries with people of the same ethnicity. Though this created unity and stronger countries, it would also lead to such extreme pride in one's peoples that violence against the other was common.