What role did nationalism play in the outbreak of World War I?
A. Nationalism caused a reduction in trade.
B. Nationalism caused countries to stop the alliance system.
C. Nationalism convinced the people of Europe that their own nation could take on any military threat.
D. Nationalism led to a new era of peace negotiations.
Nationalism is pride in one's country, which can lead to terrible consequences and was also one of the major causes of WW1. C. Nationalism convinced the people of Europe that their own nation could take on any military threat.
