How was Nationalism a cause for World War 1?
Nationalism played a huge part in WWI’s existence. It not only caused the assassination of the Archduke, but Germany wasn’t fully recognized by the other countries as a tough competitor, and the German people wanted to be a real force in world affairs. Nationalism was also the “How” of imperialism, if the “Why” is the need for resources. Imperialism couldn’t have existed if the countrymen weren’t willing to conquest for their country. Look at British imperialism slogans: ‘The sun never sets on the British empire’ and ‘A British empire from Cape to Cairo’; they all promote nationalism for the imperial cause.