Explain Nationalism and how it impacted WWI.

Nationalism is the excessive patriotism and devotion to the interest of a particular nation or state, believing that nations will benefit better by acting independently instead of collectively and making more emphasis in national interests than getting international goals.

Nationalism was prevalent in the early 20th century and a significant cause of WWI, since most of the Europeans citizens believed in the supremacy of their nations, so nationalists and militarists assured to the citizens that if war came upon them their nation would emerge victorious. In general nationalism and militarism contributed to a continental delusion, suggesting a European war was necessary to assure the supremacy of the countries.