How did the alliance system in Europe contribute to the start of World War I?

Question

Responses
A The alliance system helped nations secure their national treasuries.The alliance system helped nations secure their national treasuries.
B The alliance system was a failed attempt at diplomacy to keep the peace.The alliance system was a failed attempt at diplomacy to keep the peace.
C The alliance system kept nations divided politically promoting hostility.The alliance system kept nations divided politically promoting hostility.
D The alliance system forced great nations to go to war when their allies did.

Answer 1

D The alliance system forced great nations to go to war when their allies did.

The alliance system in Europe, particularly the complex web of treaties and alliances, meant that when one country was drawn into conflict, its allies were obligated to support it, leading to a rapid escalation of what could have been a localized conflict into a full-scale war. This was a significant factor in the outbreak of World War I.