KnowraZimmermann TelegramLinked fromLinked fromThe 7 pages that link to Zimmermann Telegram, each with the reason it gives.All 7Broader topic 2Related 4Compared with 1Fourteen PointsRelated: Its publication helped shift U.S. opinion toward entering the war before Wilson proposed his peace program.Unrestricted submarine warfareRelated: Its revelation compounded American anger after Germany resumed unrestricted attacks.Casus belliRelated: Its publication helped shift U.S. public opinion toward entering war against Germany.Sinking of RMS LusitaniaRelated: Alongside renewed unrestricted submarine warfare, it helped bring the United States into the war.