Which statement best describes the alliance systems in the years leading up to world war i? a) each country in europe was aware of the diplomatic agreements between the other countries. b) pre-war alliances were made in secret and elevated diplomatic tensions within those governments. c) international groups like the league of nations failed in their efforts to prevent military build-ups. d) the alliances were entered into mainly for economic reasons rather than for political or military ones. e

The statement which describes the alliance systems in the years leading up to World War I is ''Pre-war alliances were made in secret & elevated diplomatic tensions within those governments.''

Option B

Explanation:

One of the main reasons cause the world war 1 is the alliance system. First was between central powers like Germany, Austria-Hungary, Italy & Turkey. Second was between powers like Russia, France, Great Britain & united states.

In 1879, the secret 'dual alliance' had been formed between Germany and Austria-Hungary for assistance during the war, if Russia attack any of them. Because of this alliance system, more than 10 extra nations involved in world war 1.

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