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Used in war to drop bombs and gasses and soldiers scouted the competition
Used in battle as weapons
Buildup of a country's military
Prepare military forces for war
Spreading of ideas to promote a certain cause or to damage an opposing cause
Payment for war damages or damages caused by imprisonment
Huge casualties for attackers, no man's land were impassable, machine gun and artillery made it difficult to attack a trench
Final set of demands
Written by German foreign minister Arthur Zimmerman which stated that in return for Mexican support, Germany would help Mexico "Reconquer" lost territory