Nationalism is a strong feeling of support for one's nation. the support can mean to be proud of one's country and to want it to be the richest and most important country in the world. nationalism caused many problems among european countries in the years before world war i. strong nationalism was a cause of world war i because all the major european powers

Strong nationalism did lead to WWI. Both nationalism and imperialism were important factors in bringing WWI about.

I can give you a summary of this Story.                                                                                                                                                                                                                                                                                                                                                 Its talking about when Strong nationalism was the cause and the effect was World War I Starting.                                                                                                                                    I hope this will help you :}