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History 9 Online
OpenStudy (brooke10239):

1. How did World War 1 change warfare? A. By introducing the atomic bomb B. By showing the effectiveness of trench warfare C. By using tanks, airplanes, and machine guns D. By demonstrating the success of the blitzkrieg

OpenStudy (brooke10239):

Thanks @aubreebethune

OpenStudy (anonymous):

your welcome! Im happy to help!

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