Where did Bell demonstrate the telephone in June 1876, captivating figures like the Emperor of Brazil?
Answer
Centennial Exhibition in Philadelphia
Alexander Graham Bell's demonstration of the telephone at the Centennial Exhibition held in Philadelphia during June 1876 served as a critical launchpad for public and scientific acceptance of the new technology. The success of this demonstration was pivotal because it transformed the perception of the device from merely an interesting laboratory experiment into a potentially world-changing technology. The high-profile nature of this event, which included recognition from the Emperor of Brazil, Dom Pedro II, directly spurred the necessary investment that funded the subsequent deployment of permanent, dedicated lines required for sustained service.
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