How did nationalism and industry play a role in uniting countries

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Explanation:

Nationalism is an movement that promotes the interests of a particular nation, especially with the aim of gaining and maintaining the nation's sovereignty over its homeland.

Industry is a sector that deals with the production of goods.

Nationalism encourages self determination in people's heart, countries such as Germany, Greece, Bulgaria, and Serbia were formed by peoples having a common sense of national identify. In Europe, rule by monarchies and foreign control of territory was replaced by self-determination and newly formed national governments.

Nationalists think that the best way to have freedom by a people who are oppress by another group of people or who are forcefully control by another group of people is for each group to have their own nation. This will make every group of people to have control over there own lives.

Industrialization has also contributed to the unity of countries, whereby good are exchanged between countries.

This ideology has United Nations accross the world. Wars between nations have reduce. Fear of domination has greatly decrease in people's mind.