Question

the assassination of archduke franz ferdinand is significant because it

triggered the alliance system and started wwi

ended the war immediately

caused the u.s. to declare war

led to the creation of the league of nations

Explanation:

To solve this, we analyze each option:

• "Ended the war immediately" is incorrect as the assassination was a trigger for starting WWI, not ending it.
• "Caused the U.S. to declare war" is wrong because the U.S. entered WWI later due to other factors like the Zimmermann Telegram and unrestricted submarine warfare.
• "Led to the creation of the League of Nations" is incorrect as the League of Nations was created after WWI ended, as part of the Treaty of Versailles.
• "Triggered the alliance system and started WWI" is correct. The assassination set off a chain reaction due to the complex alliance system in Europe, leading to the outbreak of World War I.

Answer:

A. Triggered the alliance system and started WWI