USA/Mexico Border in Nogales, Mexico
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WW1: The Zimmermann Telegram

A decrypted German telegram intended for Mexico pushed the United States into World War One and prompted a wave of hostility on the US-Mexico border.

As part of a BBC series looking at stories beyond the trenches, BBC Mundo's Luis Fajardo examines the lasting impact of the Zimmermann Telegram.

Graphics by Charlie Newland.

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