Which early 20th century invention initially faced market resistance until its manufacturer created a revolutionary marketing strategy by distributing free units to every household in a small town?

Many groundbreaking inventions have fascinating origin stories that few people know. Some were accidents, others were the result of decades of research, and many faced significant skepticism before changing the world. This trivia question explores the marketing strategy that helped one particular invention overcome initial public resistance and become a household essential. Test your knowledge of how product innovation intersects with marketing brilliance!

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

The refrigerator (General Electric's Monitor Top)
The microwave oven (Raytheon's Radarange)
The telephone (Bell Telephone Company)
The vacuum cleaner (Hoover's Model O)