Prove that at the beginning of the XX century. humanity is facing the threat of a world war.

At the beginning of the twentieth century, the threat of a world war first appeared before humanity. This was due to the colonial structure of the world: some countries managed to capture many overseas territories (for example, Britain or France), while others were left completely without colonies (for example, Germany). The last category of states did not like this situation, so they began to show aggression. Also, many forms of government of states became outdated: large empires, the Ottoman, Russian and Austro-Hungarian, could no longer hold all the peoples and territories under their control.