Imperialism in world war 1

Nations competed for more land, colonies and raw materials. Great Britain and Germany competed industrially, which led to these nations needing more raw materials. Also, Austria-Hungary controlling the Slavic land of Bosnia, which Serbia believed belonged to them.

The expansion of European nations as empires (also known as imperialism) can be seen as a key cause of World War I, because as countries like Britain and France expanded their empires, it resulted in increased tensions among European countries. One of the most significant impacts of World War One was huge advances in technology, which would transform the way that people all around the world traveled and communicated, in particular, in the years after the conflict.

Explanation:

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the use of email to replace slower surface mail.