When was zimmerman telegram sent

In response to the breaking of the Sussex pledge, the United States severed diplomatic relations with Germany. Several weeks later, on February 24, the British presented the Zimmermann telegram to the U.

Government in an effort to capitalize on growing anti-German sentiment in the United States. The American press published news of the telegram on March 1. The Zimmermann Telegram had such an impact on American opinion that, according to David Kahn, author of The Codebreakers, "No other single cryptanalysis has had such enormous consequences.

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Sign up now to learn about This Day in History straight from your inbox. Native Americans had lived and hunted in the region that would become Yellowstone for hundreds of years before the first Anglo explorers arrived.

Britain began capturing large volumes of intelligence communications. British code breakers worked to decrypt communication codes. By , British Intelligence could decipher most German messages. This did not stop either the British or the Germans from attempting to lure the United States into the war on their side. The United States eventually did change course, abandoning its isolationism and joining the war.

The Lusitania was a passenger cruise ship sunk by a German submarine called a u-boat on May 7, All but 39 of the nearly 2, people on board were killed, including Americans. This attack on a civilian ship set off a huge backlash against Germany in the United States.

The rest of the information in this article will discuss the Zimmermann Telegram and the events that led the U. The British intercepted the telegram, deciphered it and then showed it to U. President Woodrow Wilson in February.