How did the alliance system contribute to the spread of World War I after the assassination of Archduke Franz Ferdinand?

(1 point)
Responses

It encouraged peaceful talks between rival nations.
It encouraged peaceful talks between rival nations.

It obligated allied nations to join the conflict.
It obligated allied nations to join the conflict.

It caused neutral countries to form a new alliance.
It caused neutral countries to form a new alliance.

It limited the war to only two major countries.

All Answers 1

Answered by GPT-5 mini AI
It obligated allied nations to join the conflict.

Brief explanation: Mutual defense agreements meant that when Austria-Hungary and Serbia clashed, their respective allies (Germany, Russia, France, Britain, etc.) were drawn in, turning a regional dispute into a general European war.