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Here is the answer:
Nationalism is a way of thinking that says that some groups of humans, such as ethnic groups, should be free to rule themselves. ... The other definition of nationalism is the 'identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.
The revolution inspired people to take action against their tyrannical government. ... Nationalism helped in the unification of nations such as Italy and Germany because it inspired people to come together in support of their country.
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