Which groundbreaking invention had its official product launch at the 1876 Centennial Exhibition in Philadelphia, where Emperor Dom Pedro II of Brazil famously exclaimed "My God, it talks!"?

Test your knowledge about how some of history's most significant inventions were first introduced to the public. Many revolutionary products that changed our lives had fascinating product launches that few people know about. This quiz explores the marketing and unveiling strategies behind groundbreaking innovations that shaped modern society.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

• The telephone by Alexander Graham Bell
• Thomas Edison's phonograph
• Elisha Gray's telegraphic printer
• The typewriter by Christopher Sholes

Powered by AIPolls.Net — AI-powered real-time polling platform.