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After the Archduke's assassination, all the great powers of Europe began declaring war on one another. This is
an example of which idea:
A. Alliance systems
B. Militarism
C. Imperialism
D. Nationalism​

Respuesta :

jayilych4real

The declaration of war by European powers on one another is a good example of A. Alliance systems

What is an Alliance?

This refers to the partnership that is forged between two or more entities about a particular uniform goal.

Hence, we can see that based on the events of WWI and the actions that led to it, European powers began to form alliance systems and declared war on each other.

Read more about World War I here:

https://brainly.com/question/446364

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