Question

Please EXPLAIN how
Nationalism helped cause
W.W.I in Europe.

Answer 1

The most direct way nationalism caused World War I was through the assassination of Archduke Franz Ferdinand, who was the heir to the throne of the Austro-Hungarian Empire. Many oppressed Slavic groups in the Austro-Hungarian Empire wanted to form independent nation states. ... Soon enough, World War I broke out.

Step-by-step explanation:

Answer 2

Serbia wanted to incorporate Serbians in Bosnia into their kingdom, Austria-Hungary wanted to strengthen their hold on their multi-ethnic empire.