The people and states around the world began to favor nationalism around 1900-2001 because it unites people from every cultures or ethnicity, for instance this help Indian to fight Britsh Raj.
Nationalism which is an ideology that helps in seeking the interest of people in a particular nation and this help to stabilize nation's sovereignty.
Countries where nationalism can be found are Russia and Germany, and for instance in Germany, we can see how nationalism help them to achieve territorial unification and cultural identity.
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