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Who popularized mass printing in the mid 15th century?

AMarshall Poe
BWarren Weaver
CJohann Gutenberg
DClaude Shannon
Answer & Solution
Correct answer: C. Johann Gutenberg
1. Until the 1400s written communication was hand-written. 2. Mass printing by Johann Gutenberg changed this. 3. Poe, Shannon and Weaver are communication theorists. _Source: Wikipedia, Communication: History_
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