Multiple choice general knowledge history

The assassination of Arch Duke Franz Ferdinand triggered one of the most important events of 20th century. What is that?

  1. Emergence of Bullet-proof vest

  2. Vietnam War

  3. Second World War

  4. First World War
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The assassination of Archduke Franz Ferdinand in 1914 was the immediate trigger that began World War I. WWII began in 1939, the Vietnam War was mid-20th century, and bulletproof vests are unrelated.

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