Question

what is the cause of first world War ​

Answer 1

Answer:

The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. ... This assassination led to Austria-Hungary declaring war on Serbia.

Explanation:

Answer 2

Answer:

Russian Growth. Even though Russia had faced massive industrial unrest in the years prior to the war, by 1914, it already boasted the largest army in the world. ..

The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. This is because big armies become potential threats to other countries, other countries started forcing alliances in order to secure land.

Explanation: