A physical change chamges the substances apperance, but a chemical changes the chemical formula of a substance. Hope this helps!
July 26,1953 I believe is the answer. Hope it helps.<span />
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.
