The correct answer among all the other choices is A. the revival of democratic revolutions, and nationalism. This is a factor that caused German and Italian unification. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Answer:
A
Explanation:
No cap i know come on in the 1800s
They were able to establish a society that had discovered art and was able to work it into other parts of the union like their calendar.
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