Which of the following directly led to the United States entering World War I and joining the Allied Nations?(1 point)Responsesassassination of Archduke Franz Ferdinandassassination of Archduke Franz FerdinandSinking of the Lusitania Sinking of the Lusitania the contents of the Zimmermann Telegram became known to the American public the contents of the Zimmermann Telegram became known to the American public the League of Nations conditions forced the US to join

Answer 1

Sinking of the Lusitania would have directly led to the United States entering World War I and joining the Allied Nations by angering the American public and increasing support for entering the war.