In the period leading up to World War I, how did nationalism unite or divide citizens

this question was already asked i'm taking no credit for it but i'm going to copy and past the answer (don't worry it was verified)

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Nationalist wanted the same concepts uniting the citizens overall. Everyone generally unites as a whole against a common enemy. However, there were some states that wanted independence to make their own decisions.

Explanation:

Well it united America in the industrial field somewhat.

And it divided certain ethnic backgrounds.

Explanation:

There was more women entering the factories to aid in the war therefore giving headway to more unity in the workplace.

Division sprung up in the discrimination that many Germans faced during the time of the war. They lost jobs and were often spat upon both figuratively and literally.

just like you man, i personally think its either c or d

explanation:

but good luck with the test man

the answer is prolly b